Speed VS Velocity

A great read on Farnham Street this morning: Understanding Speed and Velocity: Saying “NO” to the Non-Essential.

Velocity and speed are different things. Speed is the distance traveled over time. I can run around in circles with a lot of speed and cover several miles that way, but I’m not getting anywhere. Velocity measures displacement. It’s direction-aware.
— Farnham Street

This image speaks for itself: