Suppose that two nuclear particles collide with each another in a head-on elastic collision. The…


Suppose that two nuclear grains smite after a while each another in a head-on flexible clash. The bulk of the rst nuclear grain is m1 and the bulk of the avoid nuclear grain is m2. If m2 is initially at tranquillity, show that a needful and suf- cient situation for the rst grain to backscatter from the avoid is m1