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11 June, 06:44

Imagine the running deer has a mass of 100 kg and is running at a speed of 8 m/s. What is the deer's kinetic energy, in joules?

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  1. 11 June, 06:55
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    Answer: 3200 joules.

    Explanation:

    Mass of deer = 100kg

    Speed of running deer = 8 m/s

    Kinetic energy = ?

    Kinetic energy is the energy possessed by a moving body (deer). It is measured in joules.

    Thus, Kinetic energy = 1/2 x (Mass x velocity^2)

    K. E = 1/2 x (100kg x (8m/s) ^2)

    K. E = 1/2 x (100 x 64)

    = 0.5 x 6400

    = 3200 joules

    Thus, the kinetic energy of the running deer is 3200 joules.
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