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1.7 Energy, work and power

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Question 424

To calculate the kinetic energy of a moving object, the mass of the object must be known.

What else needs to be known to calculate the kinetic energy?

A

The speed of the object is needed (✓\checkmark✓); the distance travelled by the object is needed (✓\checkmark✓)

B

The speed of the object is needed (✓\checkmark✓); the distance travelled by the object is not needed (×\times×)

C

The speed of the object is not needed (×\times×); the distance travelled by the object is needed (✓\checkmark✓)

D

The speed of the object is not needed (×\times×); the distance travelled by the object is not needed (×\times×)

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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