Let us assume that two objects with masses m1 and m2 are moving with velocities v1 and v2 along the x axis. The two objects collide elastically head on. After the collision, their velocities are vf1 and vf2. For any v>0, the object is moving to the right whereas for v<0, yje object is moving to the left. Find the velocities after the collision. What is the role of the masses if any in the final result? Please solve using conservation of momentum.

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