MEDIUM
AS and A Level
IMPORTANT
Earn 100

A stone of weight 10 N falls from the top of a 250 m high cliff.

How much energy is transferred to the stone if air resistance is ignored?

Important Questions on Work, Energy and Power

MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 4

The crane shown in Figure lifts its 500 N load to the top of the building from A to B. Distances are as shown on the diagram. Calculate how much work is done by the crane.

Question Image

The dotted line shows the track of the load as it is lifted by the crane.

MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 5

Figure shows the forces acting on a box that is being pushed up a slope. Calculate the work done by each force if the box moves 0.50m up the slope

Question Image

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 6
Calculate how much gravitational potential energy is gained if you climb a flight of stairs. Assume the you have a mass of 52 kg and that the height you lift yourself is 2.5 m.
MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 7

A climber of mass 100 kg (including the equipment she is carrying) ascends from sea level to the top of a mountain 5500 m high. Calculate the change in

her gravitational potential energy.

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 8

A toy car works by means of a stretched rubber band. What form of potential energy does the car store when the band is stretched?

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 8
A bar magnet is lying with its north pole next to the south pole of another bar magnet. A student pulls them apart. Why do we say that the magnets' potential energy has increased? Where has this energy come from?
MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 9

Which has more k.e., a car of mass 500 kg travelling at 15 ms-1 or a motorcycle of mass 250 kg travelling at 30 m s-1?

MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 5 - Work, Energy and Power>Questions>Q 10
Calculate the change in kinetic energy of a ball of mass 200 g when it bounces. Assume that it hits the ground with a speed of 15.8 ms-1 and leaves it at 12.2 ms-1.