A body of mass 1kg 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 second body.

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

1.	A body of mass 1kg 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 second body.
Answer» `(2)/(3) KG` `(3)/(2) kg` `(5)/(2) kg` `(2)/(5) kg` ANSWER :A