A shell of mass \( m \) moving with velocity \( v \) suddenly breaks into 2 pieces. The part hav...

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A shell of mass \( m \) moving with velocity \( v \) suddenly breaks into 2 pieces. The part having mass \( m / 4 \) remains stationary. The velocity of the other shell will be
[CPMT 1999]
(a) \( v \)
(b) \( 2 v \)
(c) \( \frac{3}{4} v \)
(d) \( \frac{4}{3} v \)
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