2. Two automobiles collide at an intersection, undergoing a completely inelastic collision as shown in the following image. Car A, with a mass of 1,200 kg, was initially moving at 18 m/s [N], while truck B, with a mass of 1,500 kg, was moving at 20 m/s [W]. Find the final velocity of the two vehicles after they stick together. We F S =20 m/s =18 m/s