Question

A table-tennis ball is thrown at a stationary bowling ball. The table-tennis ball makes a one-dimensional elastic collision and bounces back along the same line. Compared with the bowling ball after the collision, table-tennis ball will have:

1. a larger magnitude of momentum and more kinetic energy.
2. a smaller magnitude of momentum and more kinetic energy.
3. a larger magnitude of momentum and less kinetic energy.
4. a smaller magnitude of momentum and less kinetic energy.
5. the same magnitude of momentum and the same kinetic energy.