A body of mass m moving with velocity v makes a head on collision with another body of mass 2m which is initially at rest. The loss of kinetic energy of the colliding body is

Options :
  1. 5/6 of its initial K.E.
  2. 8/9 of its initial K.E.
  3. 2/3 of its initial K.E.
  4. 4/5 of its initial K.E.
Answer and Explanation :-

Answer: Option 2


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