A man on a 50 m high cliff throws a rock vertically the, Ask an Expert

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A man on a 50 m high cliff throws a rock vertically. The rock falls back down past theedge of the cliff and hits the ground 5 s after it was thrown.

a) What was the velocity with which the rock was thrown?

b) How high doesthe rock go above the cliff top before falling down?

c) When, inseconds, is the rock at the peak of its trajectory?

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