A particle of mass m strikes another particle of same mass of rest. Find the angle between the velocities of particle after the collision, if the collision is elastic.

\frac{π}{2}

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\frac{π}{3}

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\frac{π}{8}

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Zero

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Solution

The correct option is B Zero
Since collision is elastic and both the masses have same mass so according to law of conservation of momentum and also due to symmetric case first mass will immediately transfer momentum to second mass and velocity will be same as the earlier case.Hence angle made will be $Z e r o$ .

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