The Journal of Online Mathematics and Its Applications, Volume 7 (2007)

Bouncing Balls and Geometric Series, Robert Styer and Morgan Besson

How long would the ball bounce? (if you could measure the tiniest micro-bounces)

- Forever.
- Never stops.
- Counting all the bounces, it would bounce for all time.
- I guess it keeps bouncing.
- Looked to me like it bounced seven seconds!

These quotes are genuine impromptu answers by our students. A non-student said something like: "if it bounces an infinite amount of times, it must bounce an infinite amount of time."