일반물리학 1 — Center of Mass and Linear Momentum: Problem 38

38 In the overhead view of Fig. 9-46, a 300 g ball with a speed v of 6.0 m/s strikes a wall at an angle \(\theta\) of \(30^{\circ}\) and then rebounds with the same speed and angle. It is in contact with the wall for 10 ms. 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?