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2 March, 00:53

If Antonia exerts a force of 700 N to walk 6 m up a flight of stairs in 6s how much power does she use?

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  1. 2 March, 01:34
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    Work done = (potential energy gained) = (weight x height)

    Work done = 700N x 6m

    Work done = 4200 Newton-meters

    Power = (work done) / (time to do the work)

    Power = (4200 Newton-meters) / (6 sec)

    Power = (4200/6) (Joules/sec)

    Power = 700 watts

    700 watts = 0.938 Horsepower Go Antonia!
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