Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They…

Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely inelastic collision and move together thereafter with a final speed which is half of their initial velocities of the two bodies (in degree) is -

Solution

Momentum conservation along x direction

2mvcosθ=(2m)v2

cosθ=12

θ=60°

then angle between their initial velocities

= 120°

 

Asked in: JEE Main 2020 (06 Sep Shift 1)

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