A particle of mass `m_(1)` collides head on with a stationary particles of mass `m_(2)`. If `(m_(1))/(m_(2))` gte, where e is the coefficient of restitution, then :

Options

A. `m_(1)` will retrun back
B. `m_(1)` will move in same direction
C. `m_(1)` will stop
D. unpredictable

Answer

2

Explanation

`m_(1)V=m_(1)V_(1)+m_(2)V_(2).......(1)`
and `V_(2)-V_(1)=eV....(2)`
On solving `V_(1)=(V(m_(1)-em_(2)))/((m_(1)+m_(2)))`
Given `(m_(1))/(m_(2)) gt e`
So, `V_(1)` is positive and thus, `m_(1)` will move in same direction.