Question

Two blocks travel along a level frictionless surface. Block A is initially moving to the right, while block B is initially at rest. The mass of block A is greater than the mass of block B. The positive x-direction is to the right. The magnitude of the change in momentum of block A is ______ the magnitude of the change in momentum of block B.

Answer 1

Answer:

Explanation:

The magnitude of the change in momentum of block A is equal and opposite the magnitude of the change in momentum of block B.

According to law of conservation of momentum , there should not be any change in the  momentum in the system  .The system consists of A and B .  So if some change in momentum has occurred in A  , the other must have equal and opposite change in momentum so that they get cancel out and net change in momentum of system is zero.