Figure 1 shows a hockey stick about to hit a field hockey ball.

The ball is travelling towards the stick at a velocity of 14 m/s.
The ball is hit back in the opposite direction at a velocity of 22 m/s.
The ball has a mass of 0.16 kg.
The ball remains in contact with the hockey stick for a time of 8.0 ms.
Calculate the average force exerted on the ball by the hockey stick.
Use the equation:
F=mv−mut F = \frac{mv - mu}{t} F=tmv−mu