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4 July, 00:09

a man climbs on to a wall that is 4.5m high and gains 2450j 0f potential energy. what is the mass of the man?

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  1. 4 July, 01:37
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    55.5 kg.

    Step-by-step explanation:

    Potential energy = mgh

    = m * 9.81 * 4.5 = 2450 where m is the mass of the man.

    m = 2450 / (9.81 * 4.5)

    = 55.5 kg.
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