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1.7 Energy, work and power

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Question 331

Student X uses a force of 45 N to push a crate 4.0 m across a horizontal floor.

Student Y uses a force of 30 N to push another crate 2.5 m across the floor.

Which statement gives a full explanation why student X uses more energy than student Y?

A

Student X pushes their crate a greater distance than student Y.

B

Student X uses a larger force than student Y.

C

Student X uses a larger force and pushes their crate a greater distance than student Y.

D

Student X pushes a heavier crate than student Y.

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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