First slide

Second law

Question

A body of mass M moving with velocity V explodes into two equal parts. If one comes to rest and the other body moves with velocity v, what would be the value of v?

Easy

A

V
B

V/√2
C

4V
D

2V

Solution

Conserving Linear momentum,
$\large \frac {M}{2}\times v+\frac {M}{2}\times0=M\times V\Rightarrow v=2V$

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