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After a perfectly elastic collision of two identical balls, one of which was initially at rest, the velocities of both the balls are non zero. The angle θ between the final.
Velocities (in the lab frame) is
  • a)
  • b)
    θ = π
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
After a perfectly elastic collision of two identical balls, one of whi...
Angle between two particle θ1 + θ2 = 0 
Applying the conservation of linear momentum


Conservation of Kinetic energy 

from (i) and (ii)


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After a perfectly elastic collision of two identical balls, one of which was initially at rest, the velocities of both the balls are non zero. The angle θbetween the final.Velocities (in the lab frame) isa)b)θ =πc)d)Correct answer is option 'A'. Can you explain this answer?
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