This book contains graphs showing the motion of baseballs, basketballs, soccer balls, volleyballs, dodge balls, golf balls, tennis balls, ping pong balls, and toy balls as they roll and collide with a force plate. Balls are rolled on flat surfaces and inclined planes. Special features include the comparison of an official baseball with a safety baseball and a plastic baseball, and the comparison of an official golf ball with a foam golf ball and a plastic golf ball. The graphs and data contained in this book can be used by teachers and parents to supplement traditional lesson plans.