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1.7 Energy, work and power

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Question 108

An object has a mass of 15 kg.

It is lifted vertically through a height of 8.0 m.

What is the increase in the store of gravitational potential energy? (Take the gravitational field strength g=9.8 N/kgg = 9.8\text{ N/kg}g=9.8 N/kg)

A

1.9 J1.9\text{ J}1.9 J

B

18 J18\text{ J}18 J

C

120 J120\text{ J}120 J

D

1200 J1200\text{ J}1200 J

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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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