Two bodies of same mass are moving with the same speed , but in different direction. in a plane. They have a completely inelastic collision and move together thereafter with a final speed which is half of their initial speed. Thw angle b/w the intial velocities of the two bodies (in degree) is ______.
Option: 1 120
Option: 2 60
Option: 3 30
Option: 4 45
Let us apply conservation of momentum in x - direction. So,
Also from the question -
So,
So, the angle between initial velocities of the masses is =
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