A snooker ball has a mass of $200\,\text{g}$. It strikes the cushion on a snooker table and then rebounds along the same line. When it reaches the cushion, the ball is moving at $14.0\,\text{m s}^{-1}$, and after the collision it moves away at $7.0\,\text{m s}^{-1}$. The ball remains in contact with the cushion for $0.60\,\text{s}$. What is the average force exerted on the ball by the cushion?
- A1.4\,\text{N}
- B2.3\,\text{N}
- C4.2\,\text{N}
- D7.0\,\text{N}