1.

Two equal masses \[{{m}_{1}}\] and \[{{m}_{2}}\] moving along the same straight line with velocities + 3 m/s and ? 5 m/s respectively collide elastically. Their velocities after the collision will be respectively [CBSE PMT 1994, 98; AIIMS 2000]

A.          + 4 m/s for both           
B.          ? 3 m/s and +5 m/s
C.          ? 4 m/s and + 4 m/s     
D.          ? 5 m/s and + 3 m/s
Answer» E.


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