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Most Important Selected Qs for JEE AdvancedPhysicsCenter of Mass, Momentum and Collision

A collision takes place between two particles each moving with speed v , the collision is oblique. After collision two blocks move together with velocity v ^ as shown in figure. Then which of the following option is/ are true :

Options

  1. A= 2 1+2
  2. B= 2 1+2
  3. CFinal kinetic energy of system m v^2 6 (5+4 )
  4. Dloss of kinetic energy = 2 3 m v^2(1- )

Correct answer

D. loss of kinetic energy = 2 3 m v^2(1- )

Step-by-step solution

aligned & 3 m v ^ =(m v+2 m v ) i +2 m v j & v ^ = v 3 (1+2 ) i + 2 3 j & = 2 1+2 & K=k_i-k_f & 3 2 m v^2- 1 2 (3 m) v^ 2 = 3 2 m v^2- m v^2 6 (5+4 ) aligned

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