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1.7 Energy, work and power

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Question 218

In which of the following situations is there no work being done on the object and no energy being transferred?

A

A cyclist coasting down a steep hill while applying the brakes.

B

A chandelier hanging motionless from a ceiling hook.

C

An electric winch lifting a heavy anchor out of the water.

D

A child pushing a toy car at a constant speed across a carpeted floor.

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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