Question: A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the

A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff, the rock has a speed of 29 m/s. Assuming that air resistance can be ignored,

(a) The initial speed of the rock

(b) The greatest height of the rock as measured from the base of the cliff.

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