I have some objects that I need to know how fast they are going. I have a property, "speed," and I would like it to show the object's speed in blender units. For the unit, it doesn't matter that much as long as I can read it. Python or logic would work, but if it's a script I'll have it running at all times. In other words, I'll be using this every logic tic so it needs to be efficient. Thanks.
EDIT: I've figured out how to find velocity on my own, but how would I use that xyz info to find speed?