Problem 2: Impulse and net force (4 pts.) You throw a rubber ball against a wall with an initial velocity v₁ = (20 ) i + (8) j. The ball bounces back with a final velocity v = (-20 ™) ε + (6 ) . The collision between the ball and the wall takes 0.1 s, and the mass of the ball is 55 g. A. What is the magnitude and direction of the normal force the wall exerts on the ball? B. What is the magnitude and direction of the friction force the wall exerts on the ball?

Fig: 1