A body P moving with a velocity of 20kms^(-1) collides with another body of Q of the same mass at rest. After collision the velocity of Q if P comes to rest after collision is

A body P moving with a velocity of 20kms^(-1) collides with another bo

1.	A body P moving with a velocity of 20kms^(-1) collides with another body of Q of the same mass at rest. After collision the velocity of Q if P comes to rest after collision is
Answer» `10 KMS^(-1)` `20 Kms^(-1)` `30Kms^(-1)` `5 Kms^(-1)` ANSWER :B