A boy of mass 50 kg runs 675 cm in 9 sec . Find his power in kilowatt
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Answer:
375 W
Explanation:
Given, mass of body, m = 50 kg
h = 675 cm = 6.75 m
t = 9 s, g = 10 m
PE = mgh = 50 x 10 x 6.75 = 3375 J
Power of the body = PE / time = Energy / time = 3375 / 9 = 375 W
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