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A rock is kicked horizontally at a speed of 10 m/s from the edge of a cliff.The rock strikes ground 55 m from the

A rock is kicked horizontally at a speed of 10 m/s from the edge of a cliff.The rock strikes ground 55 m from the foot of the cliff of height H as suggested in the figure The speed of the rock just before it strikes the ground: the 10 m/s a. 45 m/s O b. 56 m/s c. 10 m/s. 55 m O d. 55 m/s

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