A 0.26-kg rock is thrown vertically upward from the top ofa cliff that is 32 m high. When it hits the ground at the baseof the cliff, the rock has a speed of 29 m>s. Assuming that airresistance can be ignored, find (a) the initial speed of the rockand (b) the greatest height of the rock as measured from thebase of the cliff.

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Projectile Motion