Hello,Originally Posted byFuNkY14

1. The heights which were reached by the ball perfom a geometric sequence:

2. Every bounce adds two equal distances (one way up, same way down) to the total distance.

3. When the ball touches the ground the 7th time, it has performed 6 complete bounces.

4. The total distance is a geometric serie:

Plug in the values you know:

You'll get:

You have to double this value (see 2.) and you'll get approximately 54.73

Greetings

EB