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1.7 Energy, work and power

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Question 49

A child climbs to the top of a water slide and gains 6000 J of gravitational potential energy. She slides down to the bottom. At the bottom of the slide, her kinetic energy is 1800 J.

How much energy was transferred to the surroundings as thermal energy and sound energy as the child slid down?

A

1800 J1800\text{ J}1800 J

B

4200 J4200\text{ J}4200 J

C

6000 J6000\text{ J}6000 J

D

7800 J7800\text{ J}7800 J

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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