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31 December, 19:01

A man standing on a bridge throws a stone horizontally with a speed of 20m/s. The stone hits the water below 3 seconds later. How high is the bridge?

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  1. 31 December, 20:44
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    h = 1/2 * g t^2

    = 1/2 * 9.8 * 3^2

    = 44.1 m

    d = vx * t = 20 * 3 = 60 m

    Ans: 44.1 m, 60 m
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