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1.7 Energy, work and power

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Question 145

A crane lifts 15 concrete blocks, each with a weight of 250 N.

What other information is needed to calculate the useful work done in lifting these blocks?

A

the vertical distance the blocks are lifted

B

the mass of the blocks

C

the time taken to lift the blocks

D

the power rating of the crane

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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