An object with mass m1 = 8 kg traveling with an x-velocity of V1x = 15/17 collides with an object with mass m2 = 12kg traveling with an x-velocity of V2x = - 15/13. After the collission, the 8-kg object is measured to have an x-velocity of V3x = -3/5. Find the other object's x-velocity, and hsow that it has the same mass as it started with.
a) Ansere this question approximately, using an energy-momentum diagram.
b) Solve this problem quantitatively, using four dimensional column vectors.