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1.7 Energy, work and power

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Question 285

A truck of mass 7200 kg is travelling at a speed of 5.0 m/s.

A van has a mass of 800 kg. The kinetic energy of the van is equal to the kinetic energy of the truck.

What is the speed of the van?

A

1.7 m/s1.7\text{ m/s}1.7 m/s

B

5.0 m/s5.0\text{ m/s}5.0 m/s

C

15.0 m/s15.0\text{ m/s}15.0 m/s

D

45.0 m/s45.0\text{ m/s}45.0 m/s

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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