Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
A ball hits a floor and rebounds after an inelastic collision. In this case (1) the total momentum of the ball and the earth is conserved (2) the total energy of the ball and the earth is conserved (3) the momentum of the ball just after the collision is same as that just before the collision (4) the machanical energy of the ball remains the same during the collisionA) 1, 2 and 3 are correct.
B) 1 and 2 are correct.
C) 2 and 4 are correct.
D) 1 and 3 are correct.
Correct Answer: B
Solution :
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