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[" A ball is thrown from a roof top at a...

[" 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 ball is thrown from a roof top at angle of 40^(@) 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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