A 10 HP car travels at a uniform speed of 15m/s. Calculate the work done per second by the engine. Hence, calculate the frictional force overcome. (1 HP=750W)
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Answer:
force overcome is 50 Newton
Explanation:
1 hp=750 Watts
10 hp = 750 Watts
v=15m/s
power = work/time
750 = (force×displacement)/time
750 = force×velocity
because displacement/time is velocity
750=force×15
750/15=force
force = 50 N
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