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Question

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


A
0,25
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B
5,20
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C
10,15
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D
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.

Physics

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