1. The problem statement, all variables and given/known data Car A, having a mass of 1.30 x 10+3kg is traveling at 60.0 km/h due east when it collides with car B, having a mass of mass 1.70 x 10+3kg traveling at 40.0 km/h due west. If the collision is totally inelastic, find the final velocity of car B. . 2. Relevant equations I'm using the equation m1v⃗ 1+m2v⃗ 2=(m1+m2)v⃗ f 3. The attempt at a solution I'm getting 146,000 = (3000)Vf which I'm then dividing to get a velocity of 48.66. But the answer key is telling me 3.33km/h due east. I haven't taken physics in years and am super rusty so any help would be much appreciated.