A ball of mass m moving with a constant velocity strikes against a bal – McqOptions

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1.	A ball of mass m moving with a constant velocity strikes against a ball of same mass at rest. If e= coefficient of restitution, then what will be the ratio of velocity of two balls after collision?
A.	\[\frac{1-e}{1+e}\]
B.	\[\frac{e-1}{e+1}\]
C.	\[\frac{1+e}{1-e}\]
D.	\[\frac{2+e}{e-1}\]
Answer» B. \[\frac{e-1}{e+1}\]

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