00:01
All right, we've got a graph and it looks like this.
00:10
This is v versus t and it goes up over down.
00:20
Up over down.
00:23
Okay, this is six, four.
00:29
This is two and this is zero.
00:33
And it's all seconds.
00:38
V sub s is four meters per second.
00:44
Okay.
00:50
What is the coordinate of the particle at five seconds? at five seconds.
00:59
So at five seconds, then the velocity is half of that, so that would be two.
01:08
So i just have to add up the areas.
01:12
So the position is going to be one half.
01:19
The first was a triangle.
01:21
The base is two and the height is four.
01:25
Plus the second part is just a rectangle.
01:28
The base is two and the height is four.
01:32
And the third one is a trapezoid.
01:35
One half.
01:37
Add the two heights together.
01:38
So that would be four plus two times the base, which is one.
01:47
So that's going to be 4 plus 8 plus that's 6 over 2, which is 3.
01:56
So that would be 15 meters.
02:03
Okay.
02:05
B, what is the velocity of the particle at 5 seconds? well, the velocity is given on the graph...