# A tennis ball is released so that it falls vertically to the floor and bounces again. Taking velocity upwards as positive, which of the following grap

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A tennis ball is released so that it falls vertically to the floor and bounces again. Taking velocity upwards as positive, which of the following graphs best represents the variation of its velocity v with time t?
A.
B.
C.
D.

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Intitally velocity increase along -ve axis then it becomes +ve after collision.