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1.7 Energy, work and power

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Question 8

A metal block of weight 45 N is lifted vertically upward through a distance of 6.0 m.

What is the change in the gravitational potential energy store of the block?

A

decrease of 7.5 J7.5\text{ J}7.5 J

B

decrease of 270 J270\text{ J}270 J

C

increase of 7.5 J7.5\text{ J}7.5 J

D

increase of 270 J270\text{ J}270 J

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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