A ball hits the floor and rebounds after i

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

A

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

B

The mechanical energy of the ball remains the same in the collision

C

The total momentum of the ball and the earth is conserved

D

The total energy of the ball and the earth is conserved

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

By the conservation of momentum in the absence of external force total momentum of the system (ball + earth) remains constant.