1. The problem statement, all variables and given/known data This is just a theoretical question so there aren't any values for the variables but there are two vectors with constant velocity. Given their velocity, magnitude, direction how can one calculate the minimum distance between the two vectors. Also have to solve graphically 2. Relevant equations 3. The attempt at a solution I'm currently under the assumption it has to do with slope or something along those lines. Input greatly appreciated. http://img22.imageshack.us/my.php?image=examplehr3.jpg thanks!