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1.7 Energy, work and power

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Question 16

A skier starts from rest at the top of a hill (point A). They slide down the slope without using poles, gaining speed, and then use their skis to brake to a complete stop at the bottom of the slope (point B).

Which sequence correctly describes the primary energy transfers that have taken place between A and B?

A

gravitational potential energy →\rightarrow→ kinetic energy →\rightarrow→ internal (thermal) energy

B

gravitational potential energy →\rightarrow→ internal (thermal) energy →\rightarrow→ kinetic energy

C

kinetic energy →\rightarrow→ gravitational potential energy →\rightarrow→ internal (thermal) energy

D

kinetic energy →\rightarrow→ internal (thermal) energy →\rightarrow→ gravitational potential energy

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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