A body of mass m moving with a certain speed suffers a perfectly inelastic collision with…

Physics · JEE Main · NTA ExamsWork, Energy and Power

A body of mass m moving with a certain speed suffers a perfectly inelastic collision with a body of mass M at rest. The ratio of final kinetic energy of the system to the initial kinetic energy is
  1. \(\frac{M+m}{m}\)
  2. \(\frac{m}{M+m}\)
  3. \(\frac{m}{M}\)
  4. \(\frac{M}{m}\)

Answer

(B) m M+m

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