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1.7 Energy, work and power

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Question 137

A warehouse worker has to lift a heavy box from the floor onto one of two shelves.

Which action requires the worker to develop the greatest average power?

A

lifting the box slowly to the low shelf

B

lifting the box slowly to the high shelf

C

lifting the box quickly to the low shelf

D

lifting the box quickly to the high shelf

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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