11M 5
V=15 m/s
=1 m h12
Problem Statement: A ball hit with a racquet leaves position 1 with the direction and velocity shown. The coefficient of restitution between the ball and the floor and the ball and the wall is 0.8. LOL - Line of Impact; POI - Plane of Impact
50 Points: Draw the x-y velocity components at position 1. Draw the velocity components in the x-y and LOI-POI direction at positions 2, 3, 4, and 5.
Position 1: The ball leaves with the velocity and direction shown.
Position 2: Just before the ball makes contact with the floor.
Position 3: Just after the ball loses contact with the floor.
Position 4: Just before the ball makes contact with the wall.
Position 5: Just after the ball loses contact with the wall.
Floor
$12
S34
Part A. 12.5 points: Find the components of the velocity along LOI and POI just before the ball makes contact with the floor at position [Hint: Positions 1-2; use projectile motion analysis].
Part B. 12.5 points: Find the components of the velocity along LOI and POI just after the ball loses contact with the floor at position 3. [Hint: Positions 2-3; use momentum principles].
Part C. 12.5 points: Find the components of the velocity along LOI and POI just before the ball strikes the vertical wall at position 4. (If needed, consider the scenario where the ball hits the wall on its way up.) [Hint: Positions 3-4; use projectile motion analysis].
Part D. 12.5 points: Find the components of the velocity along LOI and POI just after the ball loses contact with the wall at position 5. [Hint: Positions 4-5; use momentum principles].