LIFT: Back Spin LIFT: Top Spin Bottom of ball moving toward the direction of the ball’s flight lower flow on bottom higher flow on top F LIFT UPWARD Top of the ball moving toward the direction of the ball’s flight lower flow on top higher flow on bottom F LIFT DOWNWARD

Back Spin Ball an  to floor

 Bottom of ball moving toward flight direction  Ball has both horizontal and vertical motion  ball spin rubs floor in a horizontal direction that decelerates the ball’s forward motion  Result =  horizontal  vertical motion   Rebound  is higher than drop 

Top Spin Ball an  to floor

 Top of ball moving toward flight direction  Ball has both horizontal and vertical motion  ball spin rubs floor in a horizontal direction that accelerates the ball’s forward motion  Result =  horizontal  vertical motion   Rebound  is lower than drop 

Back Spin Basketball Bank Shot

Backboard is on a vertical plane Ball an  to board with Back Spin same reaction as a top spin ball off floor

Different View of Backboard Ball coming into backboard with top spin

Side Spin Ball Hits Straight On

Lateral spin pushes horizontally against wall/rail a reaction force in the opposite direction of the spin ball rebound  is in the direction of the reaction force