According to law of conservation of conservation of angular moments 
30×0⇒V=18×6+12×V=−9 m/s Negative sign indicates that both fragments move in opposite direction. K.E. of 12 kg=21mv2=21×12×81=486 J
A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 ms−1. The kinetic energy of the other mass is:
Held on 30 Apr 2005 · Verified 9 Jul 2026.
324 J
486 J
256 J
524 J
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