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3 Conservation of energy

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Question 46

A train of mass 2.0 × 104 kg is travelling at 15 m s-1 when it brakes to a stop. Its initial kinetic energy is transferred only to the thermal stores of the brakes and the surroundings. The thermal store of the brakes increases by 1.80 × 106 J.

Calculate the energy transferred to the thermal stores of the surroundings.

[2]
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3 Conservation of energy Questions

  1. GCSE
  2. /Physics
  3. /3 Conservation of energy

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