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1.7 Energy, work and power

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Question 174

To calculate the gravitational potential energy gained by an object being raised vertically, the mass of the object is known.

Assuming the gravitational field strength g g\,g is also known, what else needs to be known to calculate this gain in gravitational potential energy?

A

The vertical height is needed, and the time taken is needed.

B

The vertical height is needed, and the time taken is not needed.

C

The vertical height is not needed, and the time taken is needed.

D

The vertical height is not needed, and the time taken is not needed.

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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