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NEET-XI-Physics

exam-2 year:2016

with Solutions - page 3
Qstn# 118 Prvs-QstnNext-Qstn
  • #118
    Two identical balls A and B having velocities of
    0.5 m/s and -0.3 m/s respectively collide elastically
    in one dimension. The velocities of B and A after
    the collision respectively will be :-
    (1) -0.3 m/s and 0.5 m/s
    (2) 0.3 m/s and 0.5 m/s
    (3) -0.5 m/s and 0.3 m/s
    (4) 0.5 m/s and -0.3 m/s
    digAnsr:   4
    Ans : (4)
    Sol. Since both bodies are identical and collision is elastic.
    Therefore velocities will be interchanged after
    collision.
    vA = -0.3 m/s and vB = 0.5 m/s