Q 11-05-114JEE MainJEE Main 2023 (10 Apr, Shift 1)Easy
A particle of mass $m$ moving with velocity $v$ collides with a stationary particle of mass $2m$. After collision, they stick together and continue to move together with velocity
Answer: (A) $\dfrac v3$
$mv=3mv'\Rightarrow v'=\dfrac v3$.
Solution by Sreeraj P, M.Sc Physics