Question

A body of mass m having an initial velocity v makes
head on elastic collision with a stationary body of
mass M. After the collision, the body of mass m
comes to rest and only the body having mass M
moves. This will happen only when :-
(1) m >> M
(2) m << M
(3) m = M
(4) m = M/2
​

Answer 1

Answer:

3

Explanation:

bro this is basically a rule

but if u want to derive it that's very simple

using conservation of momentum we find velocity after collision of mass M is v

now use formula of "e" and hence it could be derieved