1. The problem statement, all variables and given/known data A 2200-kg van traveling north along the interstate at 25 m/s is involved in a perfectly inelastic collision with a 1500-kg automobile driven by a careless motorist who emerges at a speed of 15 m/s form an entrance ramp that makes an angle of 20 degrees with the highway. Find the magnitude and direction of the velocity of the combined wrecked vehicles. 2. Relevant equations The equation for inelastic collisions 3. The attempt at a solution What I did was find the sum of all the momentum in the x direction so 15 cos (20) * 1500 = 21143.08397 and the sum of all the momentum in the y direction so 15 sin (20) *1500 + 25(2200) = 62695.45322 and then I did tanθ = 62695.45322/21143.08397 then I did inverse tan to find theta and got 71 degrees. The correct answer is 5.78° relative to the vans original direction.