A ball with mass $0.25\,\text{kg}$ travels towards a wall at a speed of $16\,\text{m s}^{-1}$. It then bounces back along the same line at a speed of $12\,\text{m s}^{-1}$. What is the impulse on the ball while it is in contact with the wall?
- A$1.0\,\text{N s}$
- B$3.0\,\text{N s}$
- C$4.0\,\text{N s}$
- D$7.0\,\text{N s}$