Physics-
General
Easy
Question
A ball hits the floor and rebounds after inelastic collision. In this case
- The momentum of the ball just after the collision is the same as that just before the collision
- The mechanical energy of the ball remains the same in the collision
- The total momentum of the ball and the earth is conserved
- The total energy of the ball and the earth is conserved
The correct answer is: The total momentum of the ball and the earth is conserved
By the conservation of momentum in the absence of external force total momentum of the system (ball + earth) remains constant
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