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18 May, 17:52

A cell phone weighing 80 grams is flying through the air at 15 m/s. What's is it's kinetic energy

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  1. 18 May, 20:16
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    The kinetic energy of the cell phone is 9J

    Explanation:

    The kinetic energy is the energy possessed by a body by virtue of motion.

    The kinetic energy is expressed as

    KE = 1/2m (v) ²

    Given data

    Mass of cell phone m = 80g--to kg=80/1000 = 0.08kg

    Velocity of cell phone v = 15m/s

    Substituting our given data we have

    KE = 1/2*0.08 (15) ²

    KE = (0.08*225) / 2

    KE=18/2

    KE = 9J
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