So, you're speeding up.. on a skateboard, in a car, running.. and you want to calculate the rate at which you are traveling the faster you go? Check out this tutorial and learn a valuable physics lesson. This video will show you step by step how to calculate acceleration in physics and determine if an object is speeding up, slowing down or moving at a constant velocity. Acceleration is based on the direction of the object's velocity and acceleration vectors. That may seem like a mouthful, but this video breaks it down and you will surely grasp the concept by the end of the tutorial.