An athlete participating in cross-country spends the afternoon practicing, and at the end is completely exhausted from all the hard word, ev

Question

An athlete participating in cross-country spends the afternoon practicing, and at the end is completely exhausted from all the hard word, even though their average velocity during the practice was 0 m/s. Explain how this situation is possible.

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Orla Orla 4 years 2021-08-01T04:35:17+00:00 1 Answers 9 views 0

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    2021-08-01T04:36:23+00:00

    Answer: please find the answer in the explanation

    Explanation:

    Velocity is the distance covered in a specific direction per time taken.

    And in velocity, we have final velocity V and initial velocity U.

    The definition of average velocity is:

    Average velocity = (V + U)/2

    Since velocity involves direction, if the initial velocity U is of the same magnitude as the final velocity V and both are of opposite direction. Then,

    Average velocity = (-U + V)/2

    Since they are of the same magnitude,

    V = U.

    Therefore,

    Average velocity = (-U + U)/2 = 0

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