Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Energy Resources and Energy Transfers
175 practice questions
Topics covered
Practice questions
41–50 of 82 · Easy
Question 41
4 marks · Easy
Answer and see the solution →A cyclist with mass is riding at a speed of . The cyclist and bicycle come to rest after applying the brakes, stopping over a distance of .
(a)[2 marks]Calculate the initial kinetic energy of the cyclist and bicycle.
(b)[1 mark]State what happens to this kinetic energy as the cyclist comes to rest.
(c)[1 mark]Calculate the average braking force exerted on the cyclist and bicycle to bring them to rest.
Question 42
4 marks · Easy
Answer and see the solution →A small elevator with total weight rises vertically in at a constant speed.
(a)[1 mark]Calculate the work done by the elevator motor to raise the elevator.
(b)[1 mark]State the increase in gravitational potential energy (GPE) of the elevator.
(c)[2 marks]Calculate the power output of the elevator motor during the lift.
Question 43
1 mark · Easy
Answer and see the solution →State one reason why coal is described as a non-renewable energy resource.
Question 44
1 mark · Easy
Answer and check →Which of the following is considered a renewable energy resource?
- A.Wind
- B.Oil
- C.Coal
- D.Natural gas
Question 45
1 mark · Easy
Answer and see the solution →State one environmental problem caused by burning fossil fuels to produce electricity.
Question 46
1 mark · Easy
Answer and see the solution →State the main reason why nuclear energy is classified as non-renewable.
Question 47
3 marks · Easy
Answer and see the solution →A hydroelectric power station is a renewable energy resource.
(a)[1 mark]State the main energy store in water held in the reservoir before it flows down.
(b)[1 mark]Explain why hydroelectric power is described as renewable.
(c)[1 mark]State one disadvantage of using hydroelectric power stations.
Question 48
1 mark · Easy
Answer and see the solution →State one energy transfer that takes place in a solar panel used to generate electricity.
Question 49
2 marks · Easy
Answer and see the solution →A wind turbine is used to generate electricity.
(a)[1 mark]Name the initial energy store involved in this process.
(b)[1 mark]State one advantage of using wind turbines to generate electricity.
Question 50
2 marks · Easy
Answer and see the solution →Natural gas and coal are both used as fuels in power stations.
(a)[1 mark]State which one releases less carbon dioxide per unit energy produced.
(b)[1 mark]Explain why this is considered an advantage.