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1.7 Energy, work and power

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Question 416

A child climbs to the top of a playground slide and gains 1200 J of gravitational potential energy.

She then slides down to the bottom. At the bottom of the slide, her kinetic energy is 350 J.

How much energy was transferred to the surroundings as thermal energy and sound energy as she moved down the slide?

A

350 J350\text{ J}350 J

B

850 J850\text{ J}850 J

C

1200 J1200\text{ J}1200 J

D

1550 J1550\text{ J}1550 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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