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Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of ?12.0 m/s. Ignore air resistance. Determine

(a) how long it takes the first rock to hit the ground and

(b) at what velocity it hits.

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Category:- Physics
Reference No.:- M9869803

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