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1.7 Energy, work and power

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Question 290

An object has a mass of 800 kg. It moves with a speed of 25 m/s. What is its kinetic energy?

A

10 kJ10\text{ kJ}10 kJ

B

20 kJ20\text{ kJ}20 kJ

C

250 kJ250\text{ kJ}250 kJ

D

500 kJ500\text{ kJ}500 kJ

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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