0.92 (92%)
Source:
Hoffmann, Frank W.; William G. Bailey (August, 1994). Fashion & Merchandising Fads. Routledge. pp. 243-244
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rubber ball
The bounciest balls are the so-called bouncy balls, made of compressed synthetic rubber. These balls have an unusually high coefficient of restitution (inverse momentum) that allows them to return to up to 92% of a dropped height, and to utilize thrown force to reach extraordinary heights. Another generic name for the balls is "super balls," originally a trademark name for a 1964 invention first sold by the Wham-O toy company in 1966.
you want a soft rubber band ball with strechy rubber bands,but you also want to be carefull that you dont make it to big and to small
Generally the core of the ball is cork, rubber, or a mixture of the two.
coefficient