The diagram shows a steel ball-bearing in an industrial sorting machine before and after it collides with a flat vertical deflector plate.
Before the collision, the momentum of the ball-bearing is 4.5 kg m s−14.5\text{ kg m s}^{-1}4.5 kg m s−1 horizontally to the right.
After the collision, the momentum of the ball-bearing is 3.3 kg m s−13.3\text{ kg m s}^{-1}3.3 kg m s−1 horizontally to the left (in the opposite direction).
The ball-bearing is in contact with the deflector plate for a duration of 15 ms15\text{ ms}15 ms.
Calculate the magnitude of the average force exerted on the ball-bearing by the deflector plate.