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A ball of mass {10}{k}{g} strikes another ball of mass {25}{k}
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A ball of mass strikes another ball of mass at rest. If they separated in mutually perpendicular directions then the coefficient of restitution is:

A

B

C

D

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Question Text
A ball of mass strikes another ball of mass at rest. If they separated in mutually perpendicular directions then the coefficient of restitution is: