One would expect a bouncing tennis ball to have a higher rebound angle than incidence angle if the contact surface applied:

Question

Quizplus · Accepted Answer

In reality, the condition of a frictionless impact does not apply, as a ball will tend to slide over the surface during the time of contact. As the ball skids, frictional forces act to slow its horizontal velocity and, hence, decrease its speed in both the perpendicular and parallel directions. These higher frictional forces may lead to the ball having a higher rebound angle than its incidence angle, but this comes at the cost of a reduced velocity.

One Would Expect a Bouncing Tennis Ball to Have a Higher