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A Tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h2. The velocity versus height of the ball during its motion may be represented graphically by :(graph are drawn schematically and on not to scale)

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a

b

c

d

answer is A.

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Detailed Solution

We can see from options that downward direction is answered negative.Also velocity ‘V’ changes sign when it hits the floor with a velocity.Using v2−u2=2 aS, with u=0 and S=± h we can conclude that graph has to be parabolic.

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A Tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h2. The velocity versus height of the ball during its motion may be represented graphically by :(graph are drawn schematically and on not to scale)