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+1 vote
27.1k views
in Physics by (8.8k points)

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

1 Answer

+1 vote
by (13.8k points)
selected by
 
Best answer

(a) Just before it hits the ground.

(b) At the highest point reached.

(c) a = g = constant.

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