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1.7 Energy, work and power

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Question 57

An athlete of weight 600 N performs a vertical jump, raising their center of gravity by 45 cm in a push-off time of 0.3 s.

What is the average power produced by the athlete during this time?

A

90 W90\text{ W}90 W

B

900 W900\text{ W}900 W

C

1800 W1800\text{ W}1800 W

D

9000 W9000\text{ W}9000 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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