A boy of mass 50 kg runs up a staircase of 45 steps in 9s, the height – McqOptions

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1.	A boy of mass 50 kg runs up a staircase of 45 steps in 9s, the height of each step is 15 cm, find his power. (Take g = 10 m/s2):
A.	375 W
B.	325 W
C.	275 W
D.	475 W
Answer» B. 325 W

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