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a physics textbook is thrown straight upward with a velocity of 5.00 m/s from the too...

a physics textbook is thrown straight upward with a velocity of 5.00 m/s from the too of Whitehorse Hall. It hits the ground with a velocity of 14.3 m/s straight downward.
A. how much time did the book spend jn the air (correct answer: 1.97 sec)
B. what is the height of Whitehorse Hall?
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