A boy of mass 50 kg runs up a staircase of 45 steps in 9 s. If the hei – McqOptions

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1.	A boy of mass 50 kg runs up a staircase of 45 steps in 9 s. If the height of each step is 15 cm, find his power. Given, g = 10 ms-2
A.	375 W
B.	275 W
C.	275 J
D.	375 J
Answer» B. 275 W

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