Posted by **Joe** on Sunday, September 5, 2010 at 3:31pm.

A ball of mass 1.2kg and a volume of 35cm cubed is dropped from a height of 2m. Determine the height to which this ball will bounce.

- physics -
**Damon**, Sunday, September 5, 2010 at 3:49pm
If the collision with the ground is perfectly elastic it will bounce back up to 2m. Otherwise you have to know how squishy the collision was.

- physics -
**drwls**, Sunday, September 5, 2010 at 4:01pm
The density of the ball, 34 g/cm^3, is higher than that of any known material outside a star. Even uranium has a density about half that.

Did you make up that question? Perhaps someone is playing a practical joke with this question.

If you dropped that ball on concrete, it would probably leave send pieces of concrete flying, leave a crater, and bounce poorly.

- physics -
**joe**, Sunday, September 5, 2010 at 11:56pm
drwls- so the answer cannot be determined?

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**drwls**, Monday, September 6, 2010 at 12:12am
Correct. An experiment would be needed to establish the fractional energy loss per bounce.

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