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4 August, 08:50

Superman lived on another planet where the acceleration due to gravity is 23.6 m/s2. If a woman falls from a building that is 88.3 m tall, how long does he have to save her before she hits the ground?

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  1. 4 August, 10:23
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    Acceleration due to gravity = 2.6m/s²

    Length of building = d = 88.3m

    Time he needed before she hits the ground = ?

    we can find the time by using the formula;

    D = 1/2at²

    Now putting the value;

    88.3 = (1/2) a t ²

    88.3 = 1/2 x 23.6 x t ²

    t² = 88.3 / 11.8

    = 7.48

    t = 2.735 seconds
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