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Three ball A, B and C (mA = mC = 4 mB) are placed on a smooth horizontal surface. Ball B collides with ball C with an initial velocity v as shown in the figure. Total number of collision between the balls will be : (All collisions are elastic)
    Correct answer is '2'. Can you explain this answer?
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    Three ballA,BandC(mA=mC= 4mB) are placed on a smooth horizontal surfac...
    For 1st collision
    Since 

    e = 1
    v = v1 + v2
    ⇒ v2 = v – v1   ...(1)
    By momentum conservation :
    For second collision :
    By momentum conservation :
    From (2) and (4) :

     
    Therefore B can not collide with C for the second time.
    Hence; total number of collision is 2.
    The correct answer is: 2
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    Most Upvoted Answer
    Three ballA,BandC(mA=mC= 4mB) are placed on a smooth horizontal surfac...
    For 1st collision
    Since 

    e = 1
    v = v1 + v2
    ⇒ v2 = v – v1   ...(1)
    By momentum conservation :
    For second collision :
    By momentum conservation :
    From (2) and (4) :

     
    Therefore B can not collide with C for the second time.
    Hence; total number of collision is 2.
    The correct answer is: 2
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    Three ballA,BandC(mA=mC= 4mB) are placed on a smooth horizontal surface. BallBcollides with ballCwith an initial velocityvas shown in the figure. Total number of collision between the balls will be : (All collisions are elastic)Correct answer is '2'. Can you explain this answer?
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