Question

A rock is thrown downward with a speed of 10.7 m/s from the top of a cliff which height is 234 m. What was the time for the rock to reach the bottom of the cliff? (g = 9.59 m/s2 and assume air resistance is negligible)

Answer #1

A 0.26-kg rock is thrown vertically upward from the top of a
cliff that is 30 m high. When it hits the ground at the base of the
cliff, the rock has a speed of 31 m/s . You may want to review
(Pages 234 - 241) .A 0.26-kg rock is thrown vertically upward from
the top of a cliff that is 30 m high. When it hits the ground at
the base of the cliff, the rock has a...

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s
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Please can you go step by step. Thansk

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