A body of mass 1 kg makes an elastic collision with another body at rest and continues to move in the original direction after collision with a velocity equal to 1/5th of its original velocity. Find the mass of the second body.

A body of mass 1 kg makes an elastic collision with another body at re

1.	A body of mass 1 kg makes an elastic collision with another body at rest and continues to move in the original direction after collision with a velocity equal to 1/5th of its original velocity. Find the mass of the second body.
Answer» `(2)/(3)KG` `(3)/(2)kg` `(5)/(2)kg` `(2)/(5)kg` ANSWER :A