#100 meters persecond free

#100 meters persecond free

If someone has a better explanation of that, feel free to comment on this video and then I'll add another video explaining that better explanation. You use it for the derivitive operator, and that's so that the D's don't get confused, and that's why we use S for displacement. So that is displacement, and you might be wondering, why don't they use D for displacement? That seems like a much more natural first letter, and my best sense of that is, once you start doing calculus, you start using D for something very different. So you could say its displacement, its displacement, and the letter for displacement is S, and that is a vector quantity. So, the velocity of something is its change in, its change in position, including the direction of its change in position. Normally, they are bolded, if you can have a typeface, and they have an arrow on top of them, but this tells you that not only do I care about the value of this thing, but I care about, or I care about the size of this thing, I also care about its direction, and that's what the arrow, the arrow isn't necessarily its direction, it just tells you that it's a vector quantity. What was his average velocity? So, velocity, and there's many ways that you might see it defined, but velocity, once again, is a vector quantity, and the way that we differentiate between vector and scalar quantities is we put little arrows on top of vector quantities. He was displaced five kilometers to the north.

Distance is the scalar, but if you give the direction too, you get the displacement, so this right here is a vector quantity.

So they gave us a magnitude, that's the five kilometers, that's the size of how far he moved, and they also give a direction, so he moved a distance of five kilometers. So they're giving us that he was able to travel five kilometers to the north. So, first I have, If Shantanu was able to travel five kilometers north in one hour, in his car, what was his average velocity? So, one, let's just review a little bit about what we know about vectors and scalars. Now that we know a little bit about vectors and scalars, let's try to apply what we know about them for some pretty common problems you'd once seen in physics class, but they're also common problems you'd see in everyday life because you're trying to figure out how far you've gone or how fast you're going or how long it might take you to get someplace.