This is our unit for velocity. Let's say that we know that the position at time 2, at 2 seconds, is equal to negative 10 meters. If we're thinking in one dimension, if we're just moving along the number line, it's 10 to the left of the origin. Given this information right over here and everything that I wrote up here, can we figure out the actual expressions for velocity as a function of time? Not just velocity at time 3, but velocity generally as a function of time and position as a function of time. I encourage you to pause this video right now and try to figure it out on your own. Let's just work through this.