Q. A body of mass $M$ moving with velocity $v\ ms^{- 1}$ suddenly breaks into two pieces. One part having mass $M/4$ remains stationary. The velocity of the other part will be
A) $v$
B) $2v$
C) $\frac{3v}{4}$
D) $\frac{4v}{3}$
Explanation
(d) $Mv = \frac{M}{4}v_{1} + \frac{3}{4}Mv_{2}$
$Mv = \frac{3}{4}Mv_{2}\ \ \ \ \ \ \ (\therefore v_{1} = 0)$
$v_{2} = \frac{4v}{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.