Which of the following are units of weight? [7k-2]
kg
N
g/cm^{3}
cm^{3}
Which of the following are units of density? [7k-3]
kg
N
g/cm^{3}
cm^{3}
Which of the following are units of volume? [7k-4]
kg
N
g/cm^{3}
cm^{3}
Which of the following are units of mass? [7k-5]
kilogram
newton
grams per centimetre cubed
centimetre cubed
Which of the following are units of weight? [7k-6]
kilogram
newton
grams per centimetre cubed
centimetre cubed
Which of the following are units of density? [7k-7]
kilogram
newton
grams per centimetre cubed
centimetre cubed
Which of the following are units of volume? [7k-8]
kilogram
newton
grams per centimetre cubed
centimetre cubed
Which of the following are units of force? [7k-9]
N
m/s
kg
cm^{3}
Which of the following are units of speed? [7k-10]
N
m/s
kg
cm^{3}
Which of the following are units of force? [7k-11]
kilogram
centimetre cubed
newton
metres per second
Which of the following are units of speed? [7k-12]
kilogram
centimetre cubed
newton
metres per second
Which word means an upward force acting on an object in a fluid (gas or liquid)? [7k-13]
upthrust
gravity
friction
weight
Which word means the force of attraction between any two objects? [7k-14]
upthrust
gravity
friction
weight
Which word means the force preventing two materials or objects in contact passing each other? [7k-15]
upthrust
gravity
friction
weight
Which word means the force of gravity on an object? [7k-16]
upthrust
pressure
friction
weight
The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to friction? [7k-17]
force F1
force F2
force F3
force F4
The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to gravity? [7k-18]
force F1
force F2
force F3
force F4
The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to the 'driving' force? [7k-19]
force F1
force F2
force F3
force F4
The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to the upthrust? [7k-20]
force F1
force F2
force F3
force F4
Which of the following is a 'force'? [7k-21]
friction
electricity
kinetic
light
Which of the following is a 'force'? [7k-22]
heat
magnetism
kinetic
light
Which of the following is a 'force'? [7k-23]
heat
electricity
gravity
light
Which of the following is a 'force'? [7k-24]
heat
electricity
kinetic
buoyancy
Calculate the block volume if L = 2 cm, B = 3 cm and H = 4 cm. [7k-25]
24 cm^{3}
12 cm^{3}
36 cm^{3}
9 cm^{3}
Calculate the block volume if L = 15 cm, B = 2 cm and H = 4 cm. [7k-26]
60 cm^{3}
120 cm^{3}
90 cm^{3}
240 cm^{3}
Calculate the block volume if L = 4 cm, B = 2 cm and H = 7 cm. [7k-27]
112 cm^{3}
28 cm^{3}
56 cm^{3}
42 cm^{3}
Calculate the block volume if L = 3 cm, B = 6 cm and H = 2 cm. [7k-28]
15 cm^{3}
18 cm^{3}
54 cm^{3}
36 cm^{3}
Which of the following is a 'force'? [7k-29]
air resistance
electricity
kinetic
light
You are given the following masses and volumes for various blocks of materials. The mass of 1 cm^{3} of water is 1 g. From them choose which one will sink in water? [7k-30]
material W: mass = 8 g, volume = 10 cm^{3}
material X: mass = 30 g, volume = 20 cm^{3}
material Y: mass = 27 g, volume = 30 cm^{3}
material Z: mass = 20 g, volume = 40 cm^{3}
You are given the following masses and volumes for various blocks of materials. The mass of 1 cm^{3} of water is 1 g. From them choose which one will float on water? [7k-31]
material W: mass = 12 g, volume = 10 cm^{3}
material X: mass = 22 g, volume = 20 cm^{3}
material Y: mass = 27 g, volume = 30 cm^{3}
material Z: mass = 20 g, volume = 19 cm^{3}
You are given the following masses and volumes for various blocks of materials. The mass of 1 cm^{3} of water is 1 g. From them choose which one will float on water? [7k-32]
material W: mass = 12 g, volume = 10 cm^{3}
material X: mass = 22 g, volume = 20 cm^{3}
material Y: mass = 30 g, volume = 28 cm^{3}
material Z: mass = 12 g, volume = 13 cm^{3}
You are given the following masses and volumes for various blocks of materials. The mass of 1 cm^{3} of water is 1 g. From them choose which one will sink in water? [7k-33]
material W: mass = 15 g, volume = 10 cm^{3}
material X: mass = 10 g, volume = 20 cm^{3}
material Y: mass = 27 g, volume = 30 cm^{3}
material Z: mass = 20 g, volume = 40 cm^{3}
You are given the following masses and volumes for various blocks of materials. From them choose which one has a density of 0.5 g/cm^{3}? [7k-34]
material W: mass = 8 g, volume = 8 cm^{3}
material X: mass = 8 g, volume = 16 cm^{3}
material Y: mass = 12 g, volume = 8 cm^{3}
material Z: mass = 16 g, volume = 8 cm^{3}
You are given the following masses and volumes for various blocks of materials. From them choose which one has a density of 1.5 g/cm^{3}? [7k-35]
material W: mass = 8 g, volume = 8 cm^{3}
material X: mass = 8 g, volume = 16 cm^{3}
material Y: mass = 12 g, volume = 8 cm^{3}
material Z: mass = 16 g, volume = 8 cm^{3}
You are given the following masses and volumes for various blocks of materials. From them choose which one has a density of 2 g/cm^{3}? [7k-36]
material W: mass = 8 g, volume = 8 cm^{3}
material X: mass = 8 g, volume = 16 cm^{3}
material Y: mass = 12 g, volume = 8 cm^{3}
material Z: mass = 16 g, volume = 8 cm^{3}
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to friction and air resistance? [7k-37]
force F1
force F2
force F3
force F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to the effect of gravity? [7k-38]
force F1
force F2
force F3
force F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to the pedalling of the cyclist? [7k-39]
force F1
force F2
force F3
force F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to the force produced by a compression? [7k-40]
force F1
force F2
force F3
force F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE to get constant speed? [7k-41]
force F1 is equal to F3
force F1 is bigger than F3
force F3 is bigger than F1
force F2 is equal to F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE to get the speed reduced? [7k-42]
force F1 is equal to F3
force F1 is bigger than F3
force F3 is bigger than F1
force F2 is equal to F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE to get a 'speeding up'? [7k-43]
force F1 is equal to F3
force F1 is bigger than F3
force F3 is bigger than F1
force F2 is equal to F4
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE when the brakes are applied effectively? [7k-44]
force F2 is equal to F4
force F2 is bigger than F3
force F1 is bigger than F2
force F1 is greater than F3
A student carried out an experiment by putting weights on the end of a spring. After each weight was added, the length of the spring was carefully measured. The results are summarised below.
Weight added to spring (N)
2
4
6
8
10
Length of spring (cm)
23
27
31
35
39
From the data, what is the spring extension per N weight added? [7k-45]
2 cm
1 cm
3 cm
4 cm
A student carried out an experiment by putting weights on the end of a spring. After each weight was added, the length of the spring was carefully measured. The results are summarised below.
Weight added to spring (N)
2
4
6
8
10
Length of spring (cm)
23
27
31
35
39
From the data, what would be the spring length with a weight of 7N on? [7k-46]
32 cm
33 cm
34 cm
30 cm
A student carried out an experiment by putting weights on the end of a spring. After each weight was added, the length of the spring was carefully measured. The results are summarised below.
Weight added to spring (N)
2
4
6
8
10
Length of spring (cm)
23
27
31
35
39
From the data, what is the real length of the spring with no added weight on? [7k-47]
20 cm
21 cm
19 cm
22 cm
A student carried out an experiment by putting weights on the end of a spring. After each weight was added, the length of the spring was carefully measured. The results are summarised below.
Weight added to spring (N)
2
4
6
8
10
Length of spring (cm)
23
27
31
35
39
From the data, what would be the spring length with a weight of 15N on? [7k-48]
47 cm
51 cm
53 cm
49 cm
[7k-49] Calculate the work done when a force of 500 N acts through a distance of 5 m.
2500 J
100 J
25 kJ
1 kJ
[7k-50] Calculate the work done when a fork-lift truck raises a weight of 7500 N to 10 m above the ground.
7.5 kJ
75 kJ
750 J
0.75 kJ
[7k-51] How much is done when a pushing force of 2.5 kN moves a heavy object a distance of 200 m?
500 J
500 kJ
80 J
80 kJ
[7k-52] How much is done when a machine operates with a force of 600 N along a distance of 2.5 m?
15 kJ
1500 J
240 J
2.4 kJ
[7k-53] What force must applied over a distance of 5 m to effect 800 J of work?
4000 N
40 N
160 N
1600 N
[7k-54] What force applied over a distance of 25 m is equivalent to 6000 J of work?
150 kN
15 kN
240 N
2400 N
[7k-55] What force must have been applied over a distance of 120 m to do 24 kJ of work?
200 kN
20 N
200 N
2 kN
[7k-56] What force is needed to raise a load up a height of 20 m using 8 kJ of energy?
4 kN
16 kN
400 N
4 N
[7k-57] Using 5000 J of energy, how far can an object be pushed if the opposing friction force is 250 N?
5.0 m
0.05 m
2.0 m
20 m
[7k-58] Using 25 kJ of energy, how far can a machine move an object if an opposing mechanical force is 500 N?
5.0 m
0.05 m
500 m
50 m
[7k-59] Using 50 kJ of energy, how far can a machine move an object if an opposing mechanical force is 2500 N?
2.0 m
0.2 m
200 m
20 m
[7k-60] Using 3000 J of energy, how far can an object be pushed if the opposing friction force is 20 N?
6.0 m
60 m
15 m
150 m
[7k-61] Which of the following is NOT completely true about the motion of an object?
Balanced forces can only result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object whether it is moving or stationary..
Unbalanced forces can change the direction of a moving object.
[7k-62] Which of the following is NOT completely true about the motion of an object?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can only produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object whether it is moving or stationary..
Unbalanced forces can change the direction of a moving object.
[7k-63] Which of the following is NOT true about the motion of an object?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces cannot change the speed of an object that is stationary..
Unbalanced forces can change the direction of a moving object.
[7k-64] Which of the following is NOT completely true about the motion of an object?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object whether it is moving or stationary..
Unbalanced forces always change the direction of a moving object.
[7k-65] Which of the following applies to sitting on a chair?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object whether it is moving or stationary..
Unbalanced forces can change the direction of a moving object.
[7k-66] Which of the following applies to a cyclist moving with no acceleration or deceleration?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object whether it is moving or stationary..
Unbalanced forces can change the direction of a moving object.
[7k-67] Which of the following applies to a cyclist increasing the pressure on the pedals of the bike?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object that is moving.
Unbalanced forces can change the direction of a moving object.
[7k-68] Which of the following applies to a gust of winding hitting the side of a moving car?
Balanced forces can result in zero movement of an object, so it is stationary.
Balanced forces can produce a constant speed and direction for a moving object.
Unbalanced forces can change the speed of an object whether it is moving or stationary..
Unbalanced forces can change the direction of a moving object.
[7k-69] Which of the following applies to the force involved with the moon orbiting Earth?
non-contact, gravitational
non-contact, electrostatic
non-contact, magnetic
contact, friction
contact, compression
contact, tension
[7k-70] Which of the following applies to the force involved when two suspended plastic rods rubbed with a cloth are brought near each other?
non-contact, gravitational
non-contact, electrostatic
non-contact, magnetic
contact, friction
contact, compression
contact, tension
[7k-71] Which of the following applies to the force involved when an electric motor is working?
non-contact, gravitational
non-contact, electrostatic
non-contact, magnetic
contact, friction
contact, compression
contact, tension
[7k-72] Which of the following applies to the force involved when a gekko reptile climbs up the stem of a plant?
non-contact, gravitational
non-contact, electrostatic
non-contact, magnetic
contact, friction
contact, compression
contact, tension
[7k-73] Which of the following applies to the force involved for vertical columns supporting a bridge?
non-contact, gravitational
non-contact, electrostatic
non-contact, magnetic
contact, friction
contact, compression
contact, tension
[7k-74] Which of the following applies to the force involving the chains of a suspension bridge?
non-contact, gravitational
non-contact, electrostatic
non-contact, magnetic
contact, friction
contact, compression
contact, tension
[7k-75] The diagram shows the forces acting on a moving bus. Which force F corresponds to that reacting to compression?
F1
F2
F3
F4
[7k-76] The diagram shows the forces acting on a moving bus. Which force F corresponds to the effect of the Earth's gravitational field?
F1
F2
F3
F4
[7k-77] The diagram shows the forces acting on a moving bus. Which force F corresponds to the thrust from the bus engine?
F1
F2
F3
F4
[7k-78] The diagram shows the forces acting on a moving bus. Which force F includes the drag effect from air resistance?
F1
F2
F3
F4
[7k-79] The diagram shows the forces acting on a moving bus. Which force F includes the effect of friction from the moving parts of the bus?
F1
F2
F3
F4
[7k-80] The diagram shows the forces acting on a moving bus. Which is NOT true if the bus is accelerating
F1 = F2
F3 > F4
F3 = F4
F4 < F3
[7k-81] The diagram shows the forces acting on a moving bus. Which is NOT true if the bus is moving at constant speed
F1 = F2
F3 = F4
F3 > F4
F4 = F3
[7k-82] The diagram shows the forces acting on a moving bus. Which is NOT true if the bus is decelerating
F1 = F2
F3 < F4
F3 > F4
F4 > F3
Which of the following is a unit of time? [9k-1]
s
m
m/s
N
Which of the following is a unit of length? [9k-2]
s
m
m/s
N
Which of the following is a unit of speed? [9k-3]
s
m
m/s
N
Which of the following is a unit of force? [9k-4]
s
m
m/s
N
Which of the following is a unit of force? [9k-5]
newtons
metres per second
metres per sec per sec
newton x metres
Which of the following is a unit of speed? [9k-6]
newtons
metres per second
metres per sec per sec
newton x metres
Which of the following is a unit of distance? [9k-7]
km/s
h
cm
y
Which of the following is a unit of speed? [9k-8]
m/s^{2}
h
cm
km/h
Which of the following is a unit of distance? [9k-9]
km
h
cm/s
N
Which of the following is a unit of time? [9k-10]
km
h
cm/s
N
Which of the following is a unit of speed? [9k-11]
km/h^{2}
h
cm/s
N
Which of the following is a unit of speed? [9k-12]
newtons per kilogram
metres per second per second
seconds per centimetre
kilometres per hour
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. At which point is the speeding up or acceleration the greatest? [9k-13]
point (1)
point (2)
point (3)
point (5)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. Indicate a point where the parachutist's speed constant? [9k-14]
point (1)
point (4)
point (6)
point (2)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. Between which points is the parachutist's speed constant? [9k-15]
points (5) and (6)
points (1) and (2)
points (7) and (8)
points (2) and (3)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. At which point was the parachute opened? [9k-16]
point (2)
point (3)
point (7)
point (5)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. Between which points is the speed decreasing (deceleration)? [9k-17]
points (5) and (7)
points (2) and (3)
points (7) and (8)
points (4) and (5)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. Between which points is the air resistance force (friction) equal to the force of gravity on the parachutist? [9k-18]
points (1) and (3)
points (3) and (5)
points (5) and (6)
points (6) and (7)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. Between which points is the air resistance force (friction) equal to the force of gravity on the parachutist? [9k-19]
points (1) and (2)
points (2) and (3)
points (7) and (8)
points (5) and (6)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. State a point where the gravity force on the parachutist is greater than the air resistance force (friction)? [9k-20]
point (3)
point (4)
points (8)
point (2)
The graph shows how the speed of a parachutist varies from point (1) immediately jumping out of an aeroplane, to landing safely at point (8) with the parachute opened. State a point where the gravitational weight force on the parachutist is greater than the air resistance force (friction) [9k-21]
point (6)
point (4)
point (8)
point (7)
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to the force of gravity. Which of the following applies to the situation when the lift is stationary? [9k-22]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to the force of gravity. Which of the following applies to the situation when the lift is moving up at a constant speed? [9k-23]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to the force gravity. Which of the following applies to the situation when the lift is moving down at a constant speed? [9k-24]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to gravity. Which of the following applies to the situation when the lift is moving upwards with increasing speed? (e.g. start of lift ascent) [9k-25]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to gravity. Which of the following applies to the situation when the lift is moving upwards and slowing down? (e.g. as lift reaches the top) [9k-26]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to gravity. Which of the following applies to the situation when the lift is moving down with increasing speed? (e.g. as lift starts descent) [9k-27]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
When a lift is operating, the two main forces are the tension in the cable, from the motor action, and the weight of the lift car and people, due to gravity. Which of the following applies to the situation when the lift is moving down and slowing down? (e.g. as lift reaches bottom) [9k-28]
the tension is equal to the weight
the tension is more than the weight
the tension is less than the weight
A broken down bus is being towed along a road by a truck. Which force is represented on the diagram by F3 and F8? [9k-29]
friction
weight
upthrust
thrust
tension
A broken down bus is being towed along a road by a truck. Which force is represented on the diagram by F4 and F9? [9k-30]
air resistance
weight
upthrust
thrust
tension
A broken down bus is being towed along a road by a truck. Which force is represented on the diagram by F2 and F7? [9k-31]
friction
weight
upthrust
thrust
tension
A broken down bus is being towed along a road by a truck. Which force is represented on the diagram by F1 and F6? [9k-32]
air resistance
weight
upthrust
thrust
tension
A broken down bus is being towed along a road by a truck. Which force is represented on the diagram by F10? [9k-33]
friction
weight
upthrust
thrust
tension
A broken down bus is being towed along a road by a truck. Which force is represented by on the diagram F5? [9k-34]
air resistance
weight
upthrust
thrust
tension
Which of the following matches a speed of 9.8m/s? [9k-35]
a sprinter runs 100m in 10.2s
a conveyer belt moves along 20m in 2.5s
a cyclist covers 500m in 40s
a car moves 400m in 36s
Which of the following matches a speed of 8.0m/s? [9k-36]
a sprinter runs 100m in 10.2s
a conveyer belt moves along 20m in 2.5s
a cyclist covers 500m in 40s
a car moves 400m in 36s
Which of the following matches a speed of 12.5m/s? [9k-37]
a sprinter runs 100m in 10.2s
a conveyer belt moves along 20m in 2.5s
a cyclist covers 500m in 40s
a car moves 400m in 36s
Which of the following matches a speed of 11.1m/s? [9k-38]
a sprinter runs 100m in 10.2s
a conveyer belt moves along 20m in 2.5s
a cyclist covers 500m in 40s
a car moves 400m in 36s
Which graph represents acceleration? [9k-39]
graph (1)
graph (2)
graph (3)
graph (4)
Which graph represents a stationary object? [9k-40]
graph (1)
graph (2)
graph (3)
graph (4)
Which graph represents slowing down (deceleration)? [9k-41]
graph (1)
graph (2)
graph (3)
graph (4)
Which graph represents constant speed greater than zero? [9k-42]
graph (1)
graph (2)
graph (3)
graph (4)
[9k-43]The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. Which describes the motion of the car from 20 to 40 seconds?
constant speed
slowing down
speeding up
stopped
[9k-44] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. Which describes the motion of the car from 50 to 80 seconds?
constant speed
slowing down
speeding up
stopped
[9k-45] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. Which describes the motion of the car from 0 to 20 seconds?
constant speed
slowing down
speeding up
stopped
[9k-46] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. Which describes the motion of the car from 82 to 90 seconds?
constant speed
slowing down
speeding up
stopped
[9k-47] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. What is the average speed of the car from 0 to 20 seconds?
10 m/s
20 m/s
1.5 m/s
5.0 m/s
[9k-48] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. What is the average speed of the car from 20 to 40 seconds?
10 m/s
20 m/s
40.0 m/s
30.0 m/s
[9k-49] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. What is the average speed of the car from 40 to 80 seconds?
12.5 m/s
15.0 m/s
7.5 m/s
0.0 m/s
[9k-50] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. What is the average speed of the car from 82 to 90 seconds?
10.0 m/s
2.0 m/s
1.0 m/s
0.0 m/s
[9k-51] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. How far has the car travelled between 0 and 25 seconds?
300 m
320 m
340 m
260 m
[9k-52] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. How far has the car travelled between 30 and 64 seconds?
480 m
440 m
460 m
420 m
[9k-53] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. How far has the car travelled between 52 and 64 seconds?
60 m
40 m
80 m
120 m
[9k-54] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time.
How far has the car travelled between 82 and 90 seconds?
40 m
20 m
160 m
0 m
[9k-55] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. The car engine produces the forward motion thrust force F1. Acting against this are the combined forces of (i) moving parts friction (including braking) and (ii) the drag from air resistance, giving a total force F2. In which time span is force F2 more than F1?
44 to 82 seconds
20 to 44 seconds
0 to 20 seconds
82 to 90 seconds
[9k-56] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. The car engine produces the forward motion thrust force F1. Acting against this are the combined forces of (i) moving parts friction (including braking) and (ii) the drag from air resistance, giving a total force F2. In which time span is force F1 equal to F2?
44 to 82 seconds
20 to 44 seconds
0 to 20 seconds
82 to 90 seconds
[9k-57] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. The car engine produces the forward motion thrust force F1. Acting against this are the combined forces of (i) moving parts friction (including braking) and (ii) the drag from air resistance, giving a total force F2. In which time span is force F1 more than F2?
44 to 82 seconds
20 to 44 seconds
0 to 20 seconds
82 to 90 seconds
[9k-58] The graph shows part of an urban car journey in terms of the distance the car has travelled in a certain time. The car engine produces the forward motion thrust force F1. Acting against this are the combined forces of (i) moving parts friction (including braking) and (ii) the drag from air resistance, giving a total force F2. In which time span are forces F1 and F2 both zero?
44 to 82 seconds
20 to 44 seconds
0 to 20 seconds
82 to 90 seconds
[9k-59] A cyclist is travelling at an average speed of 5 m/s. How far will the cyclist travel in 10 s?
50 m
2 m
0.5 m
500 m
[9k-60] A cyclist is travelling at an average speed of 10 m/s. How far will the cyclist travel in 20 s?
2 m
200 m
0.5 m
50 m
[9k-61] A cyclist is travelling at an average speed of 2.5 m/s. How far will the cyclist travel in 1 minute?
2.5 m
180 m
150 m
15 m
[9k-62] A cyclist is travelling at an average speed of 6 m/s. How far will the cyclist travel in 2 minutes?
20 m
3 m
360 m
720 m
[9k-63] A racing car is travelling at an average speed of 20 m/s through a curved section of the race track. How long will it take the driver to cover 600 m?
30 s
60 s
15 s
3 s
[9k-64] A racing car is travelling at an average speed of 40 m/s through a curved section of the race track. How long will it take the driver to cover 1 km?
40 s
25 s
60 s
50 s
[9k-65] A racing car is travelling at an average speed of 60 m/s through a straight section of the race track. How long will it take the driver to cover 300 m?
18 s
15 s
5 s
20 s
[9k-66] A racing car is travelling at an average speed of 80 m/s through a straight section of the race track. How long will it take the driver to cover 2 km?
40 s
20 s
50 s
25 s
[9k-67] A child is playing on a slide. Which statement is NOT true?
the two main forces involved are weight due to gravity and friction acting in the same direction
when the force of friction equals the child's weight, the downward speed is constant
if the child sat on a rough cushion the 'slide' will be slower
if the child tucks in their arms and head the 'slide' will be faster
[9k-68] A child is playing on a slide. Which statement is NOT true?
the two main forces involved are weight due to gravity and friction acting in opposite directions
when the force of friction equals the child's weight, the downward speed decreases
if the child sat on a rough cushion the 'slide' will be slower
if the child tucks in their arms and head the 'slide' will be faster
[9k-69] A child is playing on a slide. Which statement is NOT true?
the two main forces involved are weight due to gravity and friction acting in opposite directions
when the force of friction equals the child's weight, the downward speed is constant
if the child sat on a rough cushion the 'slide' will be faster
if the child tucks in their arms and head the 'slide' will be faster
[9k-70] A child is playing on a slide. Which statement is NOT true?
the two main forces involved are weight due to gravity and friction acting in opposite directions
when the force of friction equals the child's weight, the downward speed is constant
if the child sat on a rough cushion the 'slide' will be slower
if the child tucks in their arms and head the 'slide' will be slower
A car travels 10 km in 15 minutes. What is the average speed of the car? [9k-71]
40 km/hour
1.5 km/hour
20 km/hour
150 km/hour
A train travels 40 km in 20 minutes. What is the average speed of the train? [9k-72]
2 km/hour
120 km/hour
20 km/hour
80 km/hour
A speed skater travels 120 m in 8 seconds. What is the average speed of the skater? [9k-73]
960 m/s
0.67 m/s
15 m/s
10 m/s
An athlete completes a 400 m race in 50 seconds. What is the average speed of the athlete? [9k-74]
0.125 m/s
10 m/s
9 m/s
8 m/s
A car travels 40 km in 30 minutes. What is the average speed of the car? [9k-75]
80 km/hour
1.33 km/hour
40 km/hour
120 km/hour
A train travels 60 km in 15 minutes. What is the average speed of the train? [9k-76]
300 km/hour
240 km/hour
120 km/hour
180 km/hour
A skier travels 300 m in 5 seconds. What is the average speed of the skater? [9k-77]
150 m/s
30 m/s
60 m/s
15 m/s
An athlete completes a 800 m race in 1 minute 51 seconds. What is the average speed of the athlete? [9k-78]
6.7 m/s
8.1 m/s
6.1 m/s
7.2 m/s
Which is NOT true about the situation illustrated? [9k-79]
when the pedal power force equals the drag or friction forces, the speed is increased
if the cyclist crouches down and wears smoother clothing the speed can be increased without increasing pedal power
if the pedal power force exceeds the drag or friction forces, the cyclist will increase in speed
drag or air resistance is caused by the collision of air particles with the surface of the moving object
Which is NOT true about the situation illustrated? [9k-80]
when the pedal power force equals the drag or friction forces, the speed is constant
if the cyclist crouches down and wears smoother clothing the speed cannot be increased without increasing pedal power
if the pedal power force exceeds the drag or friction forces, the cyclist will increase in speed
drag or air resistance is caused by the collision of air particles with the surface of the moving object
Which is NOT true about the situation illustrated? [9k-81]
when the pedal power force equals the drag or friction forces, the speed is constant
if the cyclist crouches down and wears smoother clothing the speed can be increased without increasing pedal power
if the pedal power force exceeds the drag or friction forces, the cyclist will be able to maintain a constant speed
drag or air resistance is caused by the collision of air particles with the surface of the moving object
Which is NOT true about the situation illustrated? [9k-82]
when the pedal power force equals the drag or friction forces, the speed is constant
if the cyclist crouches down and wears smoother clothing the speed can be increased without increasing pedal power
if the pedal power force exceeds the drag or friction forces, the cyclist will increase in speed
drag or air resistance is caused by the heating up of the surface of the moving object
Which of the following is NOT true? [9k-83]
if the air resistant drag and other friction forces are less than the engine power of the car, the car will gradually come to a halt
air resistance drag increases the faster the car travels
tyres grip the road using the force of friction
if the foot is taken off the accelerator pedal, the car slows down because the drag or friction force is greater than the motion thrust force
Which of the following is NOT true? [9k-84]
if the air resistant drag and other friction forces are greater than the engine power of the car, the car will slow down
air resistance drag stays the same whatever the speed of the car
tyres grip the road using the force of friction
if the foot is taken off the accelerator pedal, the car slows down because the drag or friction force is greater than the motion thrust force
Which of the following is NOT true? [9k-85]
if the air resistant drag and other friction forces are greater than the engine power of the car, the car will slow down
air resistance drag increases the faster the car travels
tyres grip the road using the force of gravity
if the foot is taken off the accelerator pedal, the car slows down because the drag or friction force is greater than the motion thrust force
Which of the following is NOT true? [9k-86]
if the air resistant drag and other friction forces are greater than the engine power of the car, the car will slow down
air resistance drag increases the faster the car travels
tyres grip the road using the force of friction
if the foot is taken off the accelerator pedal, the car slows down because the drag or friction force is reduced
The graph shows the comparative distance-time behaviour of a 500kg object dropped on the Earth, Jupiter and the Earth's Moon from a height of 20 000m. Some 'drops' may involve the use of a parachute. Which d-t graph line corresponds to dropping the object on Jupiter? [9k-87]
graph line (1)
graph line (2)
graph line (3)
graph line (4)
The graph shows the comparative distance-time behaviour of a 500kg object dropped on the Earth, Jupiter and the Earth's Moon from a height of 20 000m. Some 'drops' may involve the use of a parachute. Which d-t graph line corresponds to dropping the object on Earth without a parachute? [9k-88]
graph line (1)
graph line (2)
graph line (3)
graph line (4)
The graph shows the comparative distance-time behaviour of a 500kg object dropped on the Earth, Jupiter and the Earth's Moon from a height of 20 000m. Some 'drops' may involve the use of a parachute. Which d-t graph line corresponds to dropping the object on Earth with a parachute deployed on the way down? [9k-89]
graph line (1)
graph line (2)
graph line (3)
graph line (4)
The graph shows the comparative distance-time behaviour of a 500kg object dropped on the Earth, Jupiter and the Earth's Moon from a height of 20 000m. Some 'drops' may involve the use of a parachute. Which d-t graph line corresponds to dropping the object on the Moon without a parachute? [9k-90]
graph line (1)
graph line (2)
graph line (3)
graph line (4)
The graph shows the comparative distance-time behaviour of a 500kg object dropped on the Earth, Jupiter and the Earth's Moon from a height of 20 000m. Some 'drops' may involve the use of a parachute. Which d-t graph line corresponds to dropping the object on the Moon with a parachute? [9k-91]
graph line (1)
graph line (2)
graph line (3)
graph line (4)
Which animal has a shape well adapted for speed through air or water? [9k-92]
dolphin
hare
duck
giraffe
Which animal has a shape well adapted for speed through air or water? [9k-93]
hare
kestrel
duck
giraffe
Which animal has a shape well adapted for speed through air or water? [9k-94]
fox
duck
seal
elephant
In which time period is the train travelling at 100 km/hour? [9k-95]
1300 to 1400 hours
1400 to 1530 hours
1530 to 1700 hours
1700 to 1800 hours
In which time period is the train stopped? [9k-96]
1300 to 1400 hours
1400 to 1530 hours
1530 to 1700 hours
1700 to 1800 hours
In which time period is the train travelling at 66.7 km/hour? [9k-97]
1300 to 1400 hours
1400 to 1530 hours
1530 to 1700 hours
1700 to 1800 hours
In which time period is the train travelling at 50 km/hour? [9k-98]
1300 to 1400 hours
1400 to 1530 hours
1530 to 1700 hours
1700 to 1800 hours
How far has the train travelled by 4.30pm? [9k-99]
170 km
150 km
200 km
185 km
How far has the train travelled by 1.45pm? [9k-100]
60 km
75 km
90 km
95 km
At what time has the train travelled 215 km? [9k-101]
5.45pm
5.30pm
5.18pm
5pm
After what time has the train travelled 120 km? [9k-102]
3.30pm
4pm
4.15pm
3.45pm
During which time period is the cyclist speeding up (accelerating) at the slowest rate? [9k-103]
0 to 40 seconds
40 to 50 seconds
50 to 90 seconds
90 to 100 seconds
During which time period is the cyclist getting faster by 5 m/s in 10 seconds? [9k-104]
0 to 40 seconds
40 to 50 seconds
50 to 90 seconds
90 to 100 seconds
During which time period is the cyclist moving at constant speed? [9k-105]
0 to 40 seconds
40 to 50 seconds
50 to 90 seconds
90 to 100 seconds
During which time period is the cyclist increasing speed (accelerating) at the greatest rate? [9k-106]
0 to 40 seconds
40 to 50 seconds
50 to 90 seconds
90 to 100 seconds
What is speed of the cyclist after 32 seconds? [9k-107]
8 m/s
7 m/s
6 m/s
10 m/s
What is speed of the cyclist after 94 seconds? [9k-108]
17 m/s
19 m/s
21 m/s
15 m/s
How long did it take the cyclist to reach a speed of 13 m/s? [9k-109]
43 s
48 s
46 s
51 s
How long did it take the cyclist to reach a speed of 3 m/s? [9k-110]
11 s
9 s
10 s
12 s
[9k-111] During which time period is the train moving with the smallest acceleration other than when at constant speed?
0 to 20 mins
20 to 40 mins
40 to 50 mins
50 to 70 mins
70 t0 100 mins
[9k-112] During which time period is the train moving at the lowest constant speed?
0 to 20 mins
20 to 40 mins
40 to 50 mins
50 to 70 mins
70 to 100 mins
[9k-113] During which time period is the train moving with the greatest acceleration?
0 to 20 mins
20 to 40 mins
40 to 50 mins
50 to 70 mins
70 to 100 mins
[9k-114] During which time period is the train moving at the highest constant speed?
0 to 20 mins
20 to 40 mins
40 to 50 mins
50 to 70 mins
70 to 100 mins
[9k-115] During which time period is the train steadily decreasing in speed?
0 to 20 mins
20 to 40 mins
40 to 50 mins
50 to 70 mins
70 to 100 mins
[9k-116] At what time into the journey is the train moving at 80 km/h?
16 min
15 min
18 min
13 min
[9k-117]At what time into the journey is the train moving at 140 km/h?
40 min
44 min
42 min
45 min
[9k-118] What is the speed of the train after 82 minutes?
112 km/hour
114 km/hour
120 km/hour
108 km/hour
[9k-119] What is the speed of the train after 14 minutes?
73 km/hour
67 km/hour
68 km/hour
70 km/hour
[9k-120] If the green car is travelling at 20 m/s and the blue car is moving in the same straight line at 60 m/s, what is their relative motion speed?
40 m/s
80 m/s
3 m/s
30 m/s
[9k-121] If the green car is travelling at 30 km/h and the blue car is moving in the same straight line at 90 km/h, what is their relative motion speed?
120 km/h
60 km/h
3 km/h
30 km/h
[9k-122] If the green car is travelling at 20 m/s and the blue car is moving in the opposite direction at 60 m/s, what is their relative motion speed?
40 m/s
50 m/s
80 m/s
3 m/s
[9k-123] If the green car is travelling at 30 km/h and the blue car is moving in the opposite direction at 90 km/h, what is their relative motion speed?
70 km/h
60 km/h
3 km/h
120 km/h
Which of the following is a unit of force? [9L-1]
N
m^{2}
N/m^{2}
Nm
Which of the following is a unit of area? [9L-2]
N
m^{2}
N/m^{2}
Nm
Which of the following is a unit of pressure? [9L-3]
N
m^{2}
N/m^{2}
Nm
Which of the following is a unit of a moment (turning force)? [9L-4]
N
m^{2}
N/m^{2}
Nm
Which of the following is a unit of pressure? [9L-5]
Pa
m^{2}
N
Nm
Which of the following is a unit of force? [9L-6]
newtons x metres
newtons
metres squared
newtons per square metre
Which of the following is a unit of area? [9L-7]
newtons x metres
newtons
metres squared
newtons per square metre
Which of the following is a unit of pressure? [9L-8]
newtons x metres
newtons
metres squared
newtons per square metre
Which of the following is a unit of a moment (turning force)? [9L-9]
newtons x metres
newtons
metres squared
newtons per square metre
Which of the following is a unit of pressure? [9L-10]
newtons x metres
pascal
metres squared
newton
Which is 'designed' to create the greatest pressure on contact with a surface? [9L-11]
the feet of a camel
skis
drawing pin
snowshoes
Which is 'designed' to create the greatest pressure on contact with a surface? [9L-12]
the feet of a camel
skis
snowshoes
hypodermic needle on a syringe
Which is 'designed' to create the greatest pressure on contact with a surface? [9L-13]
scissor blade
snow board
snowshoes
the feet of a camel
Which is 'designed' to create the least pressure on contact with a surface? [9L-14]
scissor blade
snowshoes
drawing pin
hypodermic syringe needle
Which is 'designed' to create the least pressure on contact with a surface? [9L-15]
scissor blade
drawing pin
feet of a camel
hypodermic syringe needle
Which is 'designed' to create the least pressure on contact with a surface? [9L-16]
scissor blade
drawing pin
hypodermic syringe needle
railway sleeper supporting the steel rail
If weight w1 is 4 N, distance d2 is 50 cm and weight w2 is 2 N, what distance d1, must weight w1 be from the pivot rod to balance the ruler? [9L-17]
25 cm
20 cm
10 cm
40 cm
If distance d1 is 40 cm, distance d2 is 8 cm and weight w2 is 15 N, what weight must w1 be to balance the ruler? [9L-18]
6 N
3 N
9 N
12 N
If weight w1 is 6 N, distance d1 is 30 cm and weight w2 is 36 N, what must distance d2 be to balance the ruler? [9L-19]
10.0 cm
15.0 cm
5.0 cm
2.5 cm
If distance d1 is 240 mm, weight w1 is 8 N and distance d2 is 320 mm, what weight must w2 be to balance the ruler? [9L-20]
12 N
3 N
4 N
6 N
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Two children sit in rubber tyres connected to a see-saw system. Which two children will balance the see-saw in a horizontal (level) position? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-21]
Joe and Sally
Joe and Mike
Mike and Sally
Mary and Sally
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Two children sit in rubber tyres connected to a see-saw system. If Joe sits on the left, which children will cause the see-saw to tip down on the right (clockwise)? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-22]
Sally or Mike
Mary or Fred
only Mary
only Fred
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Two children sit in rubber tyres connected to a see-saw system. If Sally sits on the left, which children cannot cause the see-saw to tip down on the right (clockwise)? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-23]
only Mike
only Joe
Joe or Mike
Mary or Fred
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Four children sit in rubber tyres connected to a see-saw system. If Mary and Sally sit on the right, which two children sitting on the left will balance the see-saw horizontally (level)? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-24]
Fred and Joe
Mike and Joe
Joe and his identical twin brother
Fred and Mike
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Mr Brown, weighing 755 N, sits on the left side of a see-saw. Who could be sitting on the right if the see-saw tips down on the left side (anticlockwise) when they all take their feet of the ground? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-25]
Joe and Mike
Mary and Sally
Joe and Sally
Mary and Fred
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Mr Gravity, weighing 770 N, sits on the left side of a see-saw. Who could be sitting on the right if the see-saw stays in a horizontal (level) position when they all take their feet of the ground? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-26]
Joe and Mike
Mary and Sally
Joe and Sally
Mary and Fred
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Mr Moon, weighing 760 N, sits on the left side of a see-saw. Who could be sitting on the right if the see-saw stays in a horizontal (level) position when they all take their feet of the ground? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-27]
Joe and Mike
Mary and Sally
Joe and Sally
Mary and Fred
child
Joe
Mary
Fred
Sally
Mike
weight (N)
380
390
400
380
370
Mr Smith, weighing 780 N, sits on the left side of a see-saw. Who could be sitting on the right if the see-saw tips down on the right side when they all take their feet of the ground? (assume average distance from pivot or turning point, to the centre of the people is the same) [9L-28]
Joe and Mike
Mary and Sally
Joe and Sally
Mary and Fred
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to reduce the pressure of the situation? [9L-29]
the caterpillar tracks of a building site vehicle
the blades of ice skates
a cheese knife blade
the crampons on a mountain climbers boots
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to reduce the pressure of the situation? [9L-30]
the blades of ice skates
a roofer laying a ladder across a roof to work on a repair
a cheese knife blade
the crampons on a mountain climbers boots
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to reduce the pressure of the situation? [9L-31]
a cheese knife blade
the blades of ice skates
a snowboard for winter sports
the crampons on a mountain climbers boots
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to reduce the pressure of the situation? [9L-32]
the crampons on a mountain climbers boots
the blades of ice skates
a cheese knife blade
the skis for mountain sports
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to reduce the pressure of the situation? [9L-33]
an elephant's foot
the blades of ice skates
a cheese knife blade
the crampons on a mountain climbers boots
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to increase the pressure of the situation? [9L-34]
an elephant's foot
the blades of ice skates
the skis for mountain sports
the caterpillar tracks of a building site vehicle
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to increase the pressure of the situation? [9L-35]
a roofer laying a ladder across a roof to work on a repair
the skis for mountain sports
a cheese knife blade
the caterpillar tracks of a building site vehicle
Examples to help you get to the point of the question! or do you get a sinking feeling because P = F / A! Which features is designed to increase the pressure of the situation? [9L-36]
a roofer laying a ladder across a roof to work on a repair
an elephant's foot
a snowboard for winter sports
the crampons on a mountain climbers boots
Which is NOT true about a football and football boots? [9L-37]
the studs have a small contact area compared to the sole, to decrease the pressure, so they penetrate the ground easily
the sole has a much broader area than the studs so the pressure is reduced and the boot does not sink into the ground too easily
the more air that is pumped into a football, the greater the gas pressure
if the temperature rises during a match, the plastic of the ball becomes softer and the gas pressure rises
Which is NOT true about a football and football boots? [9L-38]
the studs have a small contact area compared to the sole, to increase the pressure, so they penetrate the ground easily
the sole has a much broader area than the studs so the pressure is increased and the boot does not sink into the ground too easily
the more air that is pumped into a football, the greater the gas pressure
if the temperature rises during a match, the plastic of the ball becomes softer and the gas pressure rises
Which is NOT true about a football and football boots? [9L-39]
the studs have a small contact area compared to the sole, to increase the pressure, so they penetrate the ground easily
the sole has a much broader area than the studs so the pressure is reduced and the boot does not sink into the ground too easily
the more air that is pumped into a football, the lower the gas pressure
if the temperature rises during a match, the plastic of the ball becomes softer and the gas pressure rises
Which is NOT true about a football and football boots? [9L-40]
the studs have a small area contact compared to the sole, to increase the pressure, so they penetrate the ground easily
the sole has a much broader area than the studs so the pressure is reduced and the boot does not sink into the ground too easily
the more air that is pumped into a football, the greater the gas pressure
if the temperature rises during a match, the plastic of the ball becomes harder and the gas pressure decreases
[9L-41] A spanner is 10 cm long (d), and is turned with a force of 20 N (F). What is the applied turning effect of the force or its moment?
2.0 Nm
2.0 N/m
0.5 Nm
0.30 Nm
[9L-42]A spanner is 20 cm long (d), and is turned with a force of 5 N (F). What is the applied turning effect of the force or its moment?
0.25 Nm
1.0 Nm
4 m/N
0.25 Nm
[9L-43] A spanner is 14 cm long (d), and is turned with a force of 7 N (F). What is the applied turning effect of the force or its moment?
1.96 m/N
0.50 Nm
0.98 Nm
2.0 Nm
[9L-44] A spanner is 0.4 m long (d), and is turned with a force of 10 N (F). What is the applied turning effect of the force or its moment?
0.04 Nm
25 Nm
0.4 Nm
4.0 Nm
[9L-45] A spanner is a useful tool to apply the turning effect of a force or a moment. Which is a FALSE statement about the situation?
only in tightening, and not loosening, a nut, must the spanner overcome the force of friction
the axis of the bolt acts as the 'lever pivot point'
applying 'loosening oil' to the bolt and nut reduces friction
the shorter the spanner, the smaller is the maximum turning force that can be produced
[9L-46] A spanner is a useful tool to apply the turning effect of a force or a moment. Which is a FALSE statement about the situation?
in tightening or loosening a nut, the spanner must overcome the force of friction
the middle of the spanner acts as the 'lever pivot point'
applying 'loosening oil' to the bolt and nut reduces friction
the shorter the spanner, the smaller is the maximum turning force that can be produced
[9L-47] A spanner is a useful tool to apply the turning effect of a force or a moment. Which is a FALSE statement about the situation?
in tightening or loosening a nut, the spanner must overcome the force of friction
the axis of the bolt acts as the 'lever pivot point'
applying 'loosening oil' to the bolt and nut reduces the contact surface between them
the shorter the spanner, the smaller is the maximum turning force that can be produced
[9L-48] A spanner is a useful tool to apply the turning effect of a force or a moment. Which is a FALSE statement about the situation?
in tightening or loosening a nut, the spanner must overcome the force of friction
the axis of the bolt acts as the 'lever pivot point'
applying 'loosening oil' to the bolt and nut reduces friction
the shorter the spanner, the bigger the maximum turning force that can be produced
[9L-49] Which statement is NOT true?
gases are easy to compress to a smaller volume because of the weak forces between the particles
liquids are difficult to compress to a smaller volume because there is little space between the particles
solids are almost impossible to compress to a smaller volume because there is almost no space between the particles
the higher the pressure, the more a gas will dissolve in a liquid
[9L-50] Which statement is NOT true?
gases are easy to compress to a smaller volume because of lots space between the particles
liquids are easy to compress to a smaller volume because there is a little space between the particles
solids are almost impossible to compress to a smaller volume because there is almost no space between the particles
the higher the pressure, the more a gas will dissolve in a liquid
[9L-51] Which statement is NOT true?
gases are easy to compress to a smaller volume because of lots space between the particles
liquids are difficult to compress to a smaller volume because there is little space between the particles
solids are almost impossible to compress to a smaller volume because the attractive forces between the particles are so strong
the higher the pressure, the more a gas will dissolve in a liquid
[9L-52] Which statement is NOT true?
gases are easy to compress to a smaller volume because of lots space between the particles
liquids are difficult to compress to a smaller volume because there is little space between the particles
solids are almost impossible to compress to a smaller volume because there is almost no space between the particles
the higher the pressure, the less a gas will dissolve in a liquid
[9L-53] Which statement is FALSE about being trodden on by a stiletto heeled shoe?
the stiletto heel produces a low pressure situation
the smaller the under surface of the stiletto heel, the higher the pressure created
the stiletto heel causes a high pressure because a significant weight acts on a small surface area
it is less painful if trodden on by the front part of the shoe, rather than the stiletto heel, because the weight of the person is spread over a larger area
[9L-54] Which statement is FALSE about being trodden on by a stiletto heeled shoe?
the stiletto heel produces a high pressure situation
the smaller the under surface of the stiletto heel, the lower the pressure created
the stiletto heel causes a high pressure because a significant weight acts on a small surface area
it is less painful if trodden on by the front part of the shoe, rather than the stiletto heel, because the weight of the person is spread over a larger area
[9L-55] Which statement is FALSE about being trodden on by a stiletto heeled shoe?
the stiletto heel produces a high pressure situation
the smaller the under surface of the stiletto heel, the higher the pressure created
the stiletto heel causes a high pressure because a small weight acts on a large surface area
it is less painful if trodden on by the front part of the shoe, rather than the stiletto heel, because the weight of the person is spread over a larger area
[9L-56] Which statement is FALSE about being trodden on by a stiletto heeled shoe?
the stiletto heel produces a high pressure situation
the smaller the under surface of the stiletto heal, the higher the pressure created
the stiletto heel causes a high pressure because a significant weight acts on a small surface area
it is less painful if trodden on by the front part of the shoe, rather than the stiletto heel, because the weight of the person is spread over a smaller area
[9L-57] The diagram shows a simple machine to punch holes in a sheet of material. The lever is pulled down to produce the hole. If d1 is 10 cm, d2 120 cm and the pull down force F2 required is 2 N, what punch force F1 is produced?
24 N
2.4 N
120 N
60 N
[9L-58] The diagram shows a simple machine to punch holes in a sheet of material. The lever is pulled down to produce the hole. If d2 is 80 cm and the pull force F2 used is 4 N, what is the maximum length d1 can be to produce a minimum required punch force F1 of 40 N?
2 cm
8 cm
4 cm
10 cm
[9L-59] The diagram shows a simple machine to punch holes in a sheet of material. The lever is pulled down to produce the hole. If d1 is 9 cm, d2 108 cm and the punch force F1 required is 60 N, what is the minimum pull down force F2 required?
54 N
1.8 N
5 N
12 N
[9L-60] The diagram shows a simple machine to punch holes in a sheet of material. The lever is pulled down to produce the hole. When d1 is 12 cm, the punch force required F1 is 36 N if a pull-down force F2 of 3N is applied. What is the minimum length of the lever d2 required to punch the hole?
108 cm
72 cm
60 cm
144 cm
[9L-61]Which statement is NOT true about the material inside the cylinders and pipes of a hydraulic jack or car braking system?
liquids are good to use because they are fluid and readily compressed to a smaller volume
although very fluid, gases are no good because they are too easily compressed to a smaller volume
although not easily compressed to a smaller volume, solids are no good because they are not fluid
if air gets into a hydraulic system, the system becomes less effective because air is readily compressed to a smaller volume
[9L-62] Which statement is NOT true about the material inside the cylinders and pipes of a hydraulic jack or car braking system?
liquids are good to use because they are fluid and not readily compressed to a smaller volume
although not very fluid, gases are good because they are easily compressed to a smaller volume
although not easily compressed to a smaller volume, solids are no good because they are not fluid
if air gets into a hydraulic system, the system becomes less effective because air is readily compressed to a smaller volume
[9L-63]Which statement is NOT true about the material inside the cylinders and pipes of a hydraulic jack or car braking system?
liquids are good to use because they are fluid and not readily compressed to a smaller volume
although very fluid, gases are no good because they are too easily compressed to a smaller volume
although easily compressed to a smaller volume, solids are good because they are not too fluid
if air gets into a hydraulic system, the system becomes less effective because air is readily compressed to a smaller volume
[9L-64] Which statement is NOT true about the material inside the cylinders and pipes of a hydraulic jack or car braking system?
liquids are good to use because they are fluid and not readily compressed to a smaller volume
although very fluid, gases are no good because they are too easily compressed to a smaller volume
although not easily compressed to a smaller volume, solids are no good because they are not fluid
if air gets into a hydraulic system, the system becomes less effective because air readily leaks out
[9L-65] A person is standing on both feet, with flat trainers, each of which has an ground contact area of 0.025 m^{2}. If the person weighs 800 N, what pressure is created on the ground by each foot when the person is standing still?
16000 N/m^{2}
32000 N/m^{2}
0.2 N/m^{2}
2000 N/m^{2}
[9L-66] An elephant is standing on all of its feet, each of which has an ground contact area of 0.08 m^{2}. If the elephant weighs 50000 N, what pressure is created on the ground?
625000 N/m^{2}
156250 N/m^{2}
0.2 N/m^{2}
2000 N/m^{2}
[9L-67] A ski design team has to take into account the pressure created by the skier on the surface of deep snow. They need to the calculate the effects of the variables which are (i) area of one ski, (ii) weight of skier, (iii) pressure created by the skier on the snow and (iv) the pressure the snow can take without the skier sinking in too much! If the maximum acceptable snow pressure is 5000 N/m^{2}, for a single ski surface area of 0.15 m^{2}, what is the maximum weight the skier can be?
33333 N
375 N
750 N
15000 N
[9L-68] A ski design team has to take into account the pressure created by the skier on the surface of deep snow. They need to the calculate the effects of the variables which are (i) area of one ski, (ii) weight of skier, (iii) pressure created by the skier on the snow and (iv) the pressure the snow can take without the skier sinking in too much! If the maximum acceptable snow pressure is 4000 N/m^{2}, what is the minimum single ski surface area acceptable, for a skier of weight 800 N?
0.1 m^{2}
0.4 m^{2}
5 m^{2}
0.2 m^{2}
A bag of sugar has a base of 6 cm x 10 cm. If it weighs 18 N, what pressure does it create standing on a shelf? [9L-69]
0.3 N/cm^{2}
3 N/cm^{2}
1.8 N/cm^{2}
18 N/cm^{2}
A stiletto heal has a base area of 3 cm^{2}. If the woman weighs 750 N, what pressure does she create on the floor when standing on one heel? [9L-70]
250 N/m^{2}
250 N/cm^{2}
2250 N/m^{2}
2250 N/cm^{2}
A waste skip a base of 2m x 4m. If it weighs 10000 N when full, what pressure does it create when standing on the road? [9L-71]
5000 N/m^{2}
5000 N/cm^{2}
1250 N/m^{2}
1250 N/cm^{2}
A brick has a base of 10 cm x 25 cm and weighs 30 N. what pressure does a stack of ten bricks create simulating the pressure created by a low wall? [9L-72]
3 N/m^{2}
0.012 N/m^{2}
2.5 N/cm^{2}
0.12 N/cm^{2}
Which statement is NOT true ? [9L-73]
the base of a dam is wider at the bottom than the top because that is where the lowest pressure is
the pressure in water increases with increase in depth of water
the pressure in water acts in all directions
the deeper a diver goes to examine the dam wall, the more nitrogen from the air supply dissolves in the blood
Which statement is NOT true ? [9L-73]
the base of a dam is wider at the bottom than the top because that is where the greatest pressure is
the pressure in water decreases with increase in depth of water
the pressure in water acts in all directions
the deeper a diver goes to examine the dam wall, the more nitrogen from the air supply dissolves in the blood
Which statement is NOT true ? [9L-75]
the base of a dam is wider at the bottom than the top because that is where the greatest pressure is
the pressure in water increases with increase in depth of water
the pressure in water acts only in a downward directions
the deeper a diver goes to examine the dam wall, the more nitrogen from the air supply dissolves in the blood
Which statement is NOT true ? [9L-76]
the base of a dam is wider at the bottom than the top because that is where the greatest pressure is
the pressure in water increases with increase in depth of water
the pressure in water acts in all directions
the deeper a diver goes to examine the dam wall, the less nitrogen from the air supply dissolves in the blood
Which word matches the phrase can be readily reduced in volume under pressure? [9L-7]
compressible
incompressible
pneumatic
hydraulic
Which word matches the phrase cannot be readily reduced in volume under pressure? [9L-78]
compressible
incompressible
pneumatic
hydraulic
Which word matches the phrase a device that uses compressed air? [9L-79]
compressible
incompressible
pneumatic
hydraulic
Which word matches the phrase a device that works off pressure transmitted through a liquid in a pipe or cylinder? [9L-80]
compressible
incompressible
pneumatic
hydraulic
Which is NOT true about the function and nutrition of your bone and muscle system? [9L-81]
to raise your arm the biceps contract and the triceps contract
to lower or straighten your arm the biceps relax and the triceps contract
cartilage is a softer material between the bones of a joint and acts as a shock absorber to minimise the chance of fracture damage
cartilage is a softer material between the bones of a joint and reduces friction that would cause pain and wear
Which is NOT true about the function and nutrition of your bone and muscle system? [9L-82]
to raise your arm the biceps contract and the triceps relax
to lower or straighten your arm the biceps contract and the triceps contract
cartilage is a softer material between the bones of a joint and acts as a shock absorber to minimise the chance of fracture damage
cartilage is a softer material between the bones of a joint and reduces friction that would cause pain and wear
Which is NOT true about the function and nutrition of your bone and muscle system? [9L-83]
to raise your arm the biceps contract and the triceps relax
to lower or straighten your arm the biceps relax and the triceps contract
cartilage is a harder material between the bones of a joint and reduces friction that would cause pain and wear
cartilage is a softer material between the bones of a joint and acts as a binding agent to minimise the chance of fracture damage
Which is NOT true about the function and nutrition of your bone and muscle system? [9L-84]
to raise your arm the biceps contract and the triceps relax
to lower or straighten your arm the biceps relax and the triceps contract
cartilage is a softer material between the bones of a joint and acts as a shock absorber to minimise the chance of fracture damage
cartilage is a harder material between the bones of a joint and increases friction to reduce pain and wear
The bones and muscles of your skeleton are a mechanical system to do various physical tasks e.g. lifting, walking etc. Which word best matches the phrase your arm acting to lift an object? [9L-85]
a lever
a pivot point or fulcrum
a moment
a force
The bones and muscles of your skeleton are a mechanical system to do various physical tasks e.g. lifting, walking etc. Which word best matches the phrase the point where the humerus and ulna bones are linked? [9L-86]
a lever
a pivot point or fulcrum
a moment
a force
The bones and muscles of your skeleton are a mechanical system to do various physical tasks e.g. lifting, walking etc. Which word best matches the phrase the weight of a lifted object x the length of your arm? [9L-87]
a lever
a pivot point or fulcrum
a moment
a force
The bones and muscles of your skeleton are a mechanical system to do various physical tasks e.g. lifting, walking etc. Which word best matches the phrase the unit of any weight you lift? [9L-88]
a lever
a force
a moment
a newton
The bones and muscles of your skeleton are a mechanical system to do various physical tasks e.g. lifting, walking etc. Which word best matches the phrase produced by any push or pull of your arm? [9L-89]
a force
a lever
a moment
a newton
The bones and muscles of your skeleton are a mechanical system to do various physical tasks e.g. lifting, walking etc. Which word(s) best matches the phrase the units of the effect of a turning force? (e.g. as you bend your arm to lift something) [9L-90]
a lever
a newton metre
a moment
a newton
[9L-91) What pressure does a factory box of base area 2.5 m^{2} containing a weight of 5000 N of materials create on the factory floor.
12 500 Pa
0.0005 Pa
2000 Pa
20 Pa
[9L-92) What pressure does a factory box of base area 1.5 m^{2} containing a weight of 3000 N of materials create on the factory floor.
12 500 Pa
4500 Pa
2000 Pa
20 Pa
[9L-93] An ice skater weighs 600 N, If the area of an ice-skate in contact with the ice is 0.0015 m^{2}, calculate the pressure on the ice created by the ice skater balancing on one ice-skate.
0.90 Pa
900 Pa
7500 Pa
400 000 Pa
[9L-94] An ice skater weighs 700 N, If the area of an ice-skate in contact with the ice is 0.0035 m^{2}, calculate the pressure on the ice created by the ice skater balancing on one ice-skate.
24 500 Pa
900 Pa
500 000 Pa
200 000 Pa
[9L-95] Which statement concerning fluids and pressure is NOT true?
Air pressure decreases with height as the weight of air above increases.
Water pressure increases with depth as the weight of water above increases.
At a given depth, water pressure is the same in all directions.
If the upthrust force acting on an object is greater than its weight, the object will float in the fluid.
[9L-97] Which statement concerning fluids and pressure is NOT true?
Air pressure decreases with height as the weight of air above decreases.
Water pressure increases with depth as the weight of water below increases.
At a given depth, water pressure is the same in all directions.
If the upthrust force acting on an object is greater than its weight, the object will float in the fluid.
[9L-97] Which statement concerning fluids and pressure is NOT true?
Air pressure decreases with height as the weight of air above decreases.
Water pressure increases with depth as the weight of water above increases.
At a given depth, water pressure is not the same in all directions.
If the upthrust force acting on an object is greater than its weight, the object will float in the fluid.
[9L-98] Which statement concerning fluids and pressure is NOT true?
Air pressure decreases with height as the weight of air above decreases.
Water pressure increases with depth as the weight of water above increases.
At a given depth, water pressure is the same in all directions.
If the upthrust force acting on an object is greater than its weight, the object will not float in the fluid.
[9L-99] The heal of a shoe has a surface area of 50 cm^{2}. What pressure on the ground is created by someone of weight 800 N wearing a pair of these shoes?
40 000Pa
16 Pa
4000 Pa
80 000 Pa
[9L-100] The heal of a shoe has a surface area of 45 cm^{2}. What pressure on the ground is created by someone of weight 630 N wearing a pair of these shoes?