How to calculate final velocity after collision

formula is used in the conservation of momentum of two objects undergoing an inelastic collision. M1*V1=M2*V2 Where m1 is the mass of object 1V1 is the change in velocity of object 1M2 is the mass of object 2 and V2 is the change in velocity of object 2 In other words, v1 and v2 are the final velocities minus the initial velocity. ................
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