In the overhead view of Figure, a 300 g ball with a speed y of 6.0 m/s

Question:

In the overhead view of Figure, a 300 g ball with a speed y of 6.0 m/s strikes a wall at an angle θ of 30o and then rebounds with the same speed and angle. It is in contact with the wall for 10ms. In unit-vector notation, what are?
(a) The impulse on the ball from the wall and
(b) The average force on the wall from the ball?