Here's why:

* Spin Direction: The ball spins from low to high, meaning the top of the ball is moving forward faster than the bottom.

* Effect: This creates a downward force on the ball, causing it to dip and bounce higher than a ball hit without spin.

Topspin is a common shot in many racquet sports, like tennis and table tennis. It's a powerful shot that can be used to hit winners, create difficult angles, and force opponents to react quickly.