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1.7 Energy, work and power

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Question 337

A woman applies a constant horizontal force of 50 N to push a crate along a level floor.

How much power is required to push the crate 6.0 m in 4.0 s?

A

12.5 W12.5\text{ W}12.5 W

B

75 W75\text{ W}75 W

C

300 W300\text{ W}300 W

D

1200 W1200\text{ W}1200 W

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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