Ask and answer questions here. You learn both ways.

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DISCUSSION and HINTS

Recall the following four-step plan outline in the lecture book and discussed in lecture:

Step 1: FBDs
Draw a free body diagram of the ball during impact with the bumper cushion. Identify the n- and t-directions on your FBD.

Step 2: Kinetics (linear impulse/momentum)
Are there forces acting on the ball in the t-direction? If not, linear momentum is conserved in that direction

Are there forces acting on the ball in the n-direction? There is a force, so don’t even think about conservation of linear momentum in that direction.

Use the coefficient of restitution to relate the n-components of velocity of the ball before and after impact.

Step 3: Kinematics
Calculate the rebound angle needed for the ball after impact for the ball to be dropped into the corner pocket.

Step 4: Solve
From your equations solve for the angle of incidence for the ball.