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12 January, 23:46

You serve a volleyball with mass of 2.1kg. The call leaves your hand at 30m/s. The ball has Energy calculate it

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  1. 13 January, 00:41
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    Answer: 945 joules

    Explanation:

    Given that:

    mass of volleyball = 2.1kg.

    Speed at moving volleyball = 30m/s. Energy possessed by volleyball = ?

    Recall that the energy possessed by a moving object is known as kinetic energy. Thus, the moving volleyball has kinetic energy.

    So, apply the formula for kinetic energy

    K. E = 1/2 x mass x speed^2

    K. E = 1/2 x 2.1kg x (30m/s) ^2

    K. E = 0.5 x 2.1kg x 900

    K. E = 945 Joules

    Thus, the volleyball has kinetic energy of the 945 joules
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