How fast must a 2500-kg elephant move to have the same kinetic energy as a 67.0-kg sprinter running at 15.0 m/s

Question

How fast must a 2500-kg elephant move to have the same kinetic energy as a 67.0-kg sprinter running at 15.0 m/s

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Acacia 5 years 2021-08-19T19:44:51+00:00 1 Answers 16 views 0

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  1. Cherry
    0
    2021-08-19T19:46:06+00:00
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    Answer:

    2.45 m/s

    Explanation:

    kinetic energy = 1/2 * m * v^2

    then, 0.5 * 2500 * x^2 = 0.5 * 67 * 15^2

    by solving for x, X = 2.45 m/s

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