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20 March, 08:00

A man with mass 82 kg runs at a speed of 2.8 ms How much kinetic energy does he have? A. 114.8 B. 221.8 C. 321.4 D. 642.9

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  1. 20 March, 08:23
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    Use the formula for kinetic energy.

    KE=1/2mv^2

    KE=1/2 * (82kg) * (2.8m/s) ^2

    KE=321.4 J

    The answer is C
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