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A ball hits a floor and rebounds after a...

A ball hits a floor and rebounds after an inelastic collision. In this case

A

the momentum of the ball just after the collision is same as that just before the collision.

B

the mechanical energy of the ball remains the same during the collision.

C

the total momentum of the ball and the Earth is conserved.

D

the total energy of the ball and the Earth remains the same.

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The correct Answer is:
C
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