Section 4. Bouncing a Ball
When you throw a ball on a rug, it doesn't bounce
much. When you throw the ball to floor, it bounces
higher. The reason is in the coefficient of bounce.
Whenever two objects collide, the following
equation is true:
V2 = e * V1
where V1 is the velocity before
collision, V2 is the velocity after
collision, and e is a constant. This constant e is
called the coefficient of bounce, which ranges from 0
to 1. When there is no friction between the two
objects, e = 1. As the friction increases, the value
of e approaches to 0.
We can say that a rug has a lower coefficient of
bounce than floor. Probably e = 0.2 in a rug, and e =
0.8 on floor.
You can experiment with the coefficient of bounce