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An atom of mass m₁ = m moves in the positive x direc-
tion with speed v₁ = v. It collides with and sticks to an
atom of mass m₂ = 2m moving in the positive y direction
with speed v₂ = 2v/3. Find the resultant speed and direc-
tion of motion of the combination, and find the kinetic
energy lost in this inelastic collision.

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