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A glass ball is dropped from a height o...

A glass ball is dropped from a height of 15 m onto a horizontal glass plate at rest. Find the upward rise of the ball after impect. The coefficient of restitution e=0.8.

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If the ball falls from a height h onto a horizontal plane, and rises up to H after impact , then
`H=e^2h=(0.8)^2xx15=9.6 m.`
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