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6 May, 00:11

An object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s. find the (a) speed and (b) mass of the object.

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  1. 6 May, 02:37
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    Kinetic energy = momentum^2 / 2 x mass

    Mass = (momentum^2 / Kinetic energy) / 2

    Mass = (25^2 / 275) / 2

    Mass = 1.136 kg.

    momentum = mass x velocity

    velocity = mass / momentum

    velocity = 1.136 / 25

    velocity = 0.04544 m/s
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