What is the speed of the rock instant before it hits ground, Physics

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What is the speed of the rock instant before it hits ground

A girl is standing at the edge of a cliff 111 m above t\he ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed of 8.79 m/s.

a) How long does it take the rock to hit the ground?

b) What is the speed of the rock the instant before it hits the ground?

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Physics: What is the speed of the rock instant before it hits ground

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Reference No:- TGS0736912

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