AP Physics 1 & 2 Relative Motion
II. Mechanics: Lecture 4 | 10:52 min
Relativity is the portion of physics that Einstein had a major part of with his theories. The basis of them is this idea of relative motion, simplified. One of the best things about physics is that you can use common sense to predict general answers to problems. Here, if you think of yourself driving down a highway and a car passes you, the car doesnt look like its going as fast as the speedometer says, rather it looks like a couple MPH. This is because the car is only going slightly fast relative to your moving frame. This is another of the basic concepts of mechanics, and next well get into the laws governing mechanics.