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17 June, 16:40

What is the final speed of a 60 kg boulder dropped from a 111 meter cliff

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  1. 17 June, 18:45
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    After rolling off the edge of the cliff and falling ' M ' meters down,

    the speed of the boulder is

    Square root of (19.6 M).

    If M=111 meters, then the speed is 46.64 meters per second.

    We have known for roughly 500 years that if there's no air resistance,

    the mass of the falling object makes no difference, and all objects fall

    with the same acceleration, speed, time to splat, etc.
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