Sarthaks Test
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A ball is thrown from a roof top at an angle of 45° above the  horizontal. It hits the ground a few seconds later. At what point  during its motion, does the ball have  

(a) greatest speed.

(b) smallest speed.

(c) greatest acceleration?  Explain

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(a) Just before it hits the ground.

(b) At the highest point reached.

(c) a = g = constant.

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