A shell of mass m moving with velocity v suddenly breakes into two pieces. part having mass frac{m}{

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5.Work, Energy, Power and Collision

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A shell of mass $m$ moving with velocity $v$ suddenly breakes into two pieces. The part having mass $\frac{m}{5}$ remains stationary. The velocity of the other part will be

A

$v$

B

$\frac{5v}{4}$

C

$\frac{4v}{5}$

D

$\frac{v}{5}$

Solution

Applying $COLM$

$\mathrm{mv}=\mathrm{m}_{1} \mathrm{v}_{1}+\mathrm{m}_{2} \mathrm{v}_{2}$

$\Rightarrow m v=\left(\frac{m}{5}\right) 0+\left(\frac{4 m}{5}\right) v_{2} \Rightarrow v_{2}=\frac{5 v}{4}$

Standard 11

Physics

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