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Manipal MET2014PhysicsCenter of Mass, Momentum and Collision

Nucleus of mass number A , originally at rest, emits the -particle with speed v . The daughter nucleus recoils with a speed of

Options

  1. A2 v /(A+4)
  2. B4 v /(A+4)
  3. C4 v /(A-4)
  4. D2 v /(A-4)

Correct answer

C. 4 v /(A-4)

Step-by-step solution

According to conservation of momentum 4 v=(A-4) v^ v^ = 4 v A-4

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