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JSCE Basic Science 2023 Objective — Question 27

Question 27 of 100 from the Junior Secondary Certificate Examination (JSCE) Basic Science 2023 Objective paper, with the correct answer and a full explanation.

A man of mass 50kg ascends a set of stairs 5m high in 5 seconds. Calculate the power expended if the acceleration due to gravity is 10m/s2

A. 100W
B. 500WCorrect
C. 250W
D. 400W

Explanation

P = mgh / t = (50 x 10 x 5) / 5 = 500 W.

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