Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Energy Resources and Energy Transfers
175 practice questions
Topics covered
Practice questions
31–40 of 82 · Easy
Question 31
2 marks · Easy
Answer and see the solution →Describe what happens to the energy stores of a ball when it is dropped from a height until it comes to rest on the ground.
Question 32
1 mark · Easy
Answer and check →Which of the following is the correct formula for calculating power?
- A.Power = Work done / Time taken
- B.Power = Mass × Acceleration
- C.Power = Distance / Time taken
- D.Power = Force × Distance
Question 33
1 mark · Easy
Answer and see the solution →State the SI unit of power.
Question 34
2 marks · Easy
Answer and see the solution →Give two examples of energy stores or forms between which energy is transferred when someone jumps off a diving board into a swimming pool.
Question 35
2 marks · Easy
Answer and see the solution →A bulb transfers 36 J of energy in 12 seconds. Calculate the power of the bulb.
Question 36
2 marks · Easy
Answer and see the solution →Explain what happens to the gravitational potential energy and kinetic energy of a ball as it rolls down a smooth slope.
Question 37
2 marks · Easy
Answer and see the solution →A boy pushes a trolley with a force of 50 N for a distance of 4 m. Calculate the work done by the boy on the trolley.
Question 38
2 marks · Easy
Answer and see the solution →Describe what is meant by the conservation of energy, using a bouncing ball as an example.
Question 39
4 marks · Easy
Answer and see the solution →A worker pushes a trolley with a constant force of for a distance of along a straight corridor. The trolley and its load have a combined mass of .
(a)[2 marks]Calculate the work done on the trolley by the worker.
(b)[1 mark]State the energy store that increases as a result of this work being done.
(c)[1 mark]If the work is done in 12 seconds, calculate the power developed by the worker.
Question 40
5 marks · Easy
Answer and see the solution →A box of mass is lifted from the ground onto a platform high. It is then pushed horizontally for along the platform with a force of .
(a)[2 marks]Calculate the work done to lift the box onto the platform.
(b)[1 mark]Calculate the increase in gravitational potential energy (GPE) of the box after lifting.
(c)[1 mark]Calculate the work done in moving the box horizontally on the platform.
(d)[1 mark]Name the type of energy store that increases as the box is pushed along the platform.