A bomb of mass 10 kg at rest explodes into two pieces of masses 4 kg and 6 kg. The velocity of the 6 kg mass is 3 m/s. The kinetic energy of the other mass is
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Explanation:
According to law of conservation of momentum m1v1 + m2v2 = 0
v2 = -m1v1/m2 = -4×6/6 = -4ms^-1
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