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Physics (AS & A Level) · May / June 2025 · Paper 14 · Question 16

9702Energy conservation

In which situation is the least amount of energy transferred?

  1. AA student and a motorcycle of total mass 80 kg come to rest from a speed of 2.0 m s–1.
  2. BA student of mass 50 kg falls a vertical distance of 2.0 m.
  3. CA student pushes a car with a horizontal force of 70 N for a horizontal distance of 2.0 m.
  4. DA student switches on a 70 W lamp for 20 s.

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Correct answer: C. A student pushes a car with a horizontal force of 70 N for a horizontal distance of 2.0 m.

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