Would anyone have information on the coefficient of elasticity or
restitution of:
1. a synthetic leather (soccer) ball
2. the human foot
3. the human foot in a leather shoe?
Any references would be much appreciated.

Thank you.
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Robert R. Gustavson
Associate Professor and Head Soccer Coach
John Brown University
Siloam Springs, Arkansas 72761
office phone: 501-524-7321
office fax: 501-524-7412