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Laws Of Motion

Question
CBSEENPH11020440

A mass ‘m’ moves with a velocity v and collides inelastically with another identical mass. After collision, the 1st mass moves with velocity v/√3 in a direction perpendicular to the initial direction of motion. Find the speed of the 2nd mass after collision

  • v

  • √3 v

  • 2v/√3

  • v/√3

Solution

C.

2v/√3

mv= mv1 cos = θ

0 space equals space fraction numerator mv over denominator square root of 3 end fraction space minus mv subscript 1 sinθ
therefore space straight v subscript 1 space equals space fraction numerator 2 over denominator square root of 3 end fraction straight v