A car of 100 H.P. is moving with a constant velocity of 72km/h .the forward force exerted by the engine on the car is ?
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Answer:
Power =force×velocity
1 horse power is 746 watt
100 horse power is 74600watt
72kmph=72*5/18=20m/s
74600=force*20force=74600/20=3730 Newton
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