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A glass marble dropped from a certain he...

A glass marble dropped from a certain height above the horizontal surface reaches the surface in time t and then continues to bounce up and down. The time in which the marble finally comes to rest is

A

`e^(n)t`

B

`e^(2)t`

C

`t[(1+e)/(1-e)]`

D

`t[(1-e)/(1+e)]`

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