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Physics (AS & A Level) · Oct / Nov 2024 · Paper 12 · Question 16

9702Energy conservation

A model car travels at a constant velocity of 12 m s–1 in a straight horizontal line. The input power to the engine of the car is 800 W. The efficiency of the engine is 60%. What is the total horizontal resistive force on the car?

  1. A27 N
  2. B40 N
  3. C67 N
  4. D110 N

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Correct answer: B. 40 N

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