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5 July, 08:15

The largest watermelon ever grown had a mass of 118 kg. Suppose this watermelon were exhibited on a platform 5.00 m above the ground. After the exhibition, the watermelon is allowed to slide along to the ground along a smooth ramp. How high above the ground is the watermelon at the moment its kinetic energy is 4.61 kJ?

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  1. 5 July, 10:14
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    Answer: height = 3.98m

    Explanation: by placing the watermelon at a height above the ground, it has a potential energy of the formulae

    p = mgh

    p = potential energy = 4.61kJ = 4610J

    m = mass of watermelon = 118 kg

    g = acceleration due gravity = 9.8 m/s²

    4610 = 118 * 9.8 * h

    h = 4610 / 118 * 9.8

    h = 4610 / 1156.4

    h = 3.98m
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