If the staircase is 25-m high and a 90-kg man runs up the
If the staircase is 25-m high and a 90-kg man runs up the staircase in 35s, how much power does he use? And what is his horse power rating?
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if the staircase is 25-m high and a 90-kg man runs up the staircase in 35s how much power does he use and what is his
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