A-level Physics · Work, energy and power
Power = force × velocity
Use P = Fv against a resistive force, at constant speed or while accelerating.
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Question 1
A car travels at a constant speed of 108 km h⁻¹ along a level road. The total resistive force on the car is 660 N. Calculate the power developed by the engine, in kW. Give your answer to 3 significant figures.
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