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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

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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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

User Keith Stein
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1 Answer

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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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