Welcome to the Physics Tutor In this DVD course, we are going to discuss the fundamental concepts of Physics and we are going to do it without a bunch of boring lectures and a bunch of derivations that will take you on five boards or whatever to do. What we are going to do it, through working example problems. I have taught a lot of people how to do Algebra, Calculus, Trig, and also Physics. And, in my experience it is actually the toughest subject to actually teach is really Physics and you might say why is that. The reason that I found that people have a tough time with Physics is because most people have a tough time with word problems and that is exactly what this course is, the entire course of Physics is basically just a bunch of Math problems that just happened to be word problems. You pick up a book of Algebra or Trigonometry or something and you will get a problem in it will say, solve this equation and then if you just know how to bang through the different steps, then you can kind of mechanically solve the equation and get the answer as long as you know the rules. Physics, is a little bit different because Physics we are going to give you some rules, but it is not going to be clear how to get to the answer. It is not going to be clear what to do first, what to do second, what to do third, it is not going to be clear how to start the problem. And so, what I am going to teach you in this course, I am going to teach you, in each section, I am going to give you a kind of a basic lecture, a very cut to the chase, do not waste any time overview of the subject that we are talking about. And then, I am going to explain the actual mechanics of how to do the problems by doing problems. And one thing I want to say, is that when you start a Physics problem or when I write a problem up here on the board, and you do not know immediately how to solve it because most of the time you will not, do not freak out, everybody goes through that. You have to learn how to do this stuff by working the problems. And, if you stick with me and start at the beginning and work your way forward, I will promise you that by the end of this DVD course, you will have a good understanding of Physics and you will have a good understanding of how to work problems on Physics. So, without wasting anymore time, let us just get right to it. The first thing that we are going to talk about on this class is the first thing and almost every single Physics book ever printed, and that is One-Dimensional Motion. That is generally going to be the first topic that you have in Physics. Now a lot of times, the very first topic will be a basic chapter that we will talk about, how do you convert units, what are the units in Physics, what is the unit of force, what is the unit of distance, what is the unit of time and stuff like that. I have chosen to kind of skip that, not because it is not important, but I am going to teach you that as we go and we work the problems. So if you do not know how to convert units, do not freak out, we are going to do that as we go along here. What is One-Dimensional Motion anyway? We do not live in a one-dimensional world. We live in a three-dimensional world, as far as the three space dimensions. So in real life, if this pen here is a basketball, let us say, and I move it around up and down, I can move it left and right, that is one dimension, well let us call it the X dimension. I can also move it to you and from you, and that is another dimension of space and we could call that the Y dimension, let us say. Well, we can also have freedom of movement in this up and down direction here and we can call that the Z dimension. They are just labels, it does not really matter; X, Y and Z, that is what we call the three-dimensional motion, that is the real world. When you go to the grocery store or actually a better example is when you fly in an airplane, you might turn left, you might turn right, but you might also go up and down, so that is thre