Momentum and CollisionHard

Question

A bomb of mass 16 kg at rest explodes into two pieces of masses of 4 kg and 12 kg. The velocity of the 12 kg mass is 4 ms-1. The kinetic energy of the other mass is

Options

A.96 J
B.144 J
C.288 J
D.192 J

Solution

m1v1 = m2v2
KE = m2v22 = × 4 × 144 = 288 J

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