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9 May, 04:51

A 4 kg rock is rolling 10 m/s find its kinetic energy

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  1. 9 May, 07:54
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    The answer is 200 J

    The kinetic energy (KE) is:

    KE = 1/2 m * v²

    m - mass of the object

    v - velocity of the object

    We have:

    m = 4 kg

    v = 10 m/s

    KE = 1/2 * 4 kg * 10² m/s

    KE = 200 J
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