First slide

The steps in collision

Question

In a two block system, an initial velocity v₀ with respect to ground is given to block A. Which of the following statement(s) is/are correct?

Moderate

A

The momentum of block A is not conserved.
B

The momentum of system of blocks A and B is conserved.
C

The increase in momentum of B is equal to the decrease in momentum of block A.
D

All of the above

Solution

Force of friction on A is backward and force of friction on B is forward. Net external force on the system is zero. Hence, momentum of system will remain conserved. As the momentum of system is conserved, so increase in momentum of B is equal to decrease in momentum of A.

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