A nucleus of mass 8 kg originally at rest emits particle of mass 4 kg with speed 2 m/s. The recoil speed of the nucleus is equal to
Question
Solution 1
The problem can be solved using the principle of conservation of momentum.
The initial momentum of the system is zero because everything is at rest.
After the emission, the momentum of the system is the sum of the momentum of the nucleus and the momentum of the particle.
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