Sorry, I should have said "Relative velocity is the velocity of one object in the rest frame of another object" as the wikipedia link says.I'm not 'trying' to learn anything new in the 'scientific' sense im trying to understand something 'theoretically' or philosophically. frankly despite my appreciation of how generous folks on physicsforums are, this consistent retort always annoys me and makes me want to actually study physics so I can reach philosophers and the general public a bit more succinctly.
"Relative velocity is the speed of one object in the rest frame of another object" how is this relative velocity as opposed to relative speed? I don't understand. However even though I ask this I am starting to get a sense why most physicists approach velocity (speed and direction) as a very composite entity such that certain questions are not really wanted in the manner that I ask them.
Speed is the magnitude of velocity. Between non-inline objects, you need to describe the relative velocity which includes the magnitude of the speed and its direction. For inline objects, you already know the direction (by definition) so you can talk just about the speed.