Two perfectly elastic particles P and Q of equal mass travel along the line joining them with velocities 15 m/sec and 10 m/sec in opposite direction. After collision, the velocity of P is and that of Q is respectively (in m/sec).

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Solution

The correct option is D 15
For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.

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Two perfectly elastic particles P and Q of equal mass travel along the line joining them with velocities 15 m/sec and 10 m/sec in opposite direction. After collision, the velocity of P is and that of Q is respectively (in m/sec).

The correct option is D 15For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.

The correct option is D 15
For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.