Acceleration is another concept that you should have an intuitive feel for. If you're accelerating you actually can feel it. The acceleration is the rate of change of velocity with respect to time. So when you're at a stop sign and you step on the gas, you kind of feel pinned to your car seat. If you suddenly step on the brakes, then you lurch forward. At least that's the way it appears in the movies. We're real safe drivers here.
So now we'll go through similar steps to our above exposition of velocity, and as a consequence, I'll cut down a bit on the verbiage.