The biggest difference between squash and racquetball centers around the ball: A small, hollow squash ball doesn't bounce. Start the day smarter. Get all the news you need in your inbox each morning.

A squash ball of mass 25 g is moving from left to right at 3.2 ms-1. It is hit by a squash racquet which applies a force for 4 milliseconds, so that the ball leaves the racquet at 8.4 ms-1 moving ...