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29 June, 04:11

A rock is dropped into the Grand Canyon. It takes 18 seconds to hit the bottom. Calculate how deep the canyon is.

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  1. 29 June, 06:06
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    The distance it falls is given by

    x = (1/2) at^2

    where a = acceleration due to gravity = 9.8 m/s^2

    x = (1/2) (9.8) (18) ^2

    x = 1587.6 m

    The answer is 1587.6 meters
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