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1.7 Energy, work and power

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Question 10

A crane lifts a shipping container vertically at a constant speed.

Which two quantities can be used to calculate the useful power output of the crane?

A

the weight of the container and the vertical distance moved only

B

the work done on the container and the vertical distance moved only

C

the work done on the container and the time taken only

D

the mass of the container and the time taken only

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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