After a totally inelastic collision, two objects of the same mass and initial sp

Question

After a totally inelastic collision, two objects of the same mass and initial speed are found to move away together at 2/3 their initial speed. Find the angle between the initial velocities of the objects.
After a totally inelastic collision, two objects of the same mass and initial speed are found to move away together at 2/3 their initial speed. Find the angle between the initial velocities of the objects.
After a totally inelastic collision, two objects of the same mass and initial speed are found to move away together at 2/3 their initial speed. Find the angle between the initial velocities of the objects.

Explanation / Answer

Let the angle between their initial velocity was ?* and velocity was u m/s
=>By the law of momentum conservation:-
=>mucos?/2 + mucos?/2 = (m+m) x 2/3u
=>2mucos?/2 = 4mu/3
=>cos?/2 = 2/3 = cos48*
=>?/2 = 48*
=>? = 96*

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