Question

A ball hits the 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 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 remains the same

Answer 1

The correct option is C the total momentum of the ball and the earth is conserved

1) K.E will be less since collision is inelastic
2) No impulsive external force on system (earth + ball)