Momentum and CollisionHard

Question

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
       

Options

A.v
B.√3 v
C.2v / √3
D.v / √3

Solution

       
mv = mv1 cos θ
0 = - mv1 sin θ
∴     v1 = v

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