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7.1 Work done

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Question 29
H

A roller coaster car of mass 500 kg starts from rest at a height of 20 m.

It travels down to a height of 5.0 m, where its speed is 15 m/s.

Gravitational field strength = 10 N/kg.

How much energy has been transferred to the surroundings?

[1]
A

18 750 J18\,750\ \text{J}18750 J

B

43 750 J43\,750\ \text{J}43750 J

C

56 250 J56\,250\ \text{J}56250 J

D

75 000 J75\,000\ \text{J}75000 J

Markscheme

7.1 Work done Questions

  1. GCSE
  2. /Physics
  3. /7.1 Work done

44 exam-style questions on OCR GCSE Physics 7.1 Work done, covering 7.1.1 Conservation of energy in a closed system, 7.1.2 Energy stores and transfers, 7.1.3 Energy changes by heating, forces and current, 7.1.4 Quantifying energy transfers in a system, and 7.1.5 Kinetic, elastic and gravitational potential energy. Each one has a worked solution and a mark scheme showing where the marks go.

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