Posted by **Mark** on Sunday, March 20, 2011 at 8:50pm.

A ball is dropped from 1.5m and bounces back up 1.2m. How many times will the ball bounce before it loses 90% of its energy? I figued since the ball bouced .8 times the original hight and 10% of 1.5m is .15m that that when the bounce hight reached.15m that 90% of the energy (hight *gravity) was lost. Istarted with 1.5m times .8, then the result * .8 , and so on. 10 times results in a bounce hight of .16. Is this a correct approach?

## Answer This Question

## Related Questions

- Physics - A rubber ball dropped from a height of exactly 5 ft bounces (hits the ...
- physics - A ball is dropped from 1.5 m and rebounds to 1.2m. How many times will...
- physic - A rubber ball dropped from a height of exactly 6 ft bounces several ...
- Math - a special rubber ball is dropped from the top of a wall that is 64 feet ...
- physics - a superball of mass .125 kg is dropped onto a concrete floor from a ...
- Physics - 2. Consider the ball example in the introduction when a ball is ...
- physics - A superball is dropped from rest from a height of 2.0m. It bounces ...
- physics - A superball is dropped from rest from a height of 2.0m. It bounces ...
- calculus - A ball has bounce coefficient 0 < r < 1 if when it is dropped ...
- physics - A ball is dropped from rest at the top of a 5.89-m-tall building, ...

More Related Questions