Question: A 0 . 2 6 - kg rock is thrown vertically upward from the top of a cliff that is 3 2 m high. When

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 32 m/s .
Part A
Assuming that air resistance can be ignored, find the initial speed of the rock.
Part B
Find the greatest height of the rock as measured from the base of the cliff.

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