Predict Collision Motion Practice Test

Two identical bumper cars (same mass) move on a flat surface. Car A moves east at $5,\text{m/s}$. Car B is at rest. Car A hits Car B from behind.

What is the best qualitative prediction for the motion of both cars right after the collision?

Cart A (mass 1 kg) moves right at 3 m/s toward Cart B (mass 3 kg) that is at rest on a low-friction track. They collide and bounce apart (they do not stick).

During the collision, the carts exert equal and opposite forces on each other.

Which prediction is most reasonable for the motion changes of BOTH carts right after the collision?