Question

A moving body with a mass m1. the masses m1 & m2 should be in the ratio m1/m2 so as to decrease the velocity of the body 1.5 times assuming a perfectly elastic impact then the ratio m1/m2 is 

Answer 1

first of all the moving body with the mass M1 the masses M1 and M2 are in the ratio and one boy I am too so as to decrease the velocity of the body 1.5 times is giving a perfectly elastic impact then ratio will be 1 by 12