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Two particles X and Y of equal mass and ...

Two particles `X` and `Y` of equal mass and with unequal positive charges, are free to move and are initially far away from each other. With `Y` at rest,` X` begins to move towards it with initial velocity `u`. After a long time, finally

A

`X` will stop `Y` will move with velocity `u`

B

`X` and `Y` will both move with velocities `u//2` each

C

`X` will stop `Y` will move with velocity `ltu`

D

both will move with velocities `ltu//2`

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A
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