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12 June, 03:11

A 68 kg student runs up a flight of stairs that is 7 m high in 9 seconds. Calculate

how much power is used.

+2
Answers (2)
  1. 12 June, 05:08
    0
    Answer:4760/9 watts

    Explanation:

    mass (m) = 68kg g=10m/s^2 height (h) = 7m time (t) = 9seconds

    Power = (m x g x h) / t

    Power = (68 x 10 x 7) / 9

    Power=4760/9 watts
  2. 12 June, 05:56
    0
    Power = Work/time

    Work = energy

    Potential energy = mxgxh

    Power=mxgxh/t

    Power=68x10x7/9

    Power=529 watts
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