A Toyota Prius driving north at 61.0 {rm mph} and a VW Passat driving south at 41.0 {rm mph} are on the same road heading toward each other (but in different lanes). (We take the positive direction to be north.)
What is the velocity of Toyota Prius relative to the VW Passat when they are 250 apart, just before they meet?
What is the velocity of VW Passat relative to the Toyota Prius when they are 250 apart, just before they meet?