A man of mass 85 kg runs up a flight of stairs of height 4.6 m in a time period

Physics

1 answer:

seraphim [82]3 years ago

7 0

Explanation:

a) Power = work / time = force × distance / time

P = Fd/t

P = (85 kg × 9.8 m/s²) (4.6 m) / (12 s)

P ≈ 319 W

b) P = Fd/t

0.70 (319 W) = (m × 9.8 m/s²) (4.6 m) / (9.6 s)

m = 47.6 kg

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Given that,

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