Two perfectly elastic particles P and Q of equal mass travelling along the line joining them with velocities 15 m/sec and 10 m/sec. After collision, their velocities respectively (in m/sec) will be

0, 25

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5, 20

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10, 15

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20, 5

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Solution

The correct option is B $10, 15$
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 travelling along the line joining them with velocities 15 m/sec and 10 m/sec. After collision, their velocities respectively (in m/sec) will be

The correct option is B 10,15For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.

The correct option is B $10, 15$
For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.