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1.7 Energy, work and power

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Question 80

A cyclist coasts along a flat, horizontal path. The cyclist's initial kinetic energy is 35 kJ. A constant resistive force of 150 N acts on the cyclist and bicycle. No other horizontal forces act on them.

What is the kinetic energy of the cyclist after travelling a distance of 120 m?

A

17 kJ17\text{ kJ}17 kJ

B

18 kJ18\text{ kJ}18 kJ

C

23 kJ23\text{ kJ}23 kJ

D

53 kJ53\text{ kJ}53 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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