00:01
So we're considering a move in checkers where a checker jumps three times, twice in one direction and then sort of turning around and going the other direction, but always moving forward, of course.
00:12
And we wonder the total displacement of this checker piece.
00:16
Now, it's actually not important.
00:17
You notice the grid that i drew here ends before the jump to the right is over.
00:23
But it doesn't matter because here's why.
00:25
We're moving from the center of one square to the center of another.
00:29
So if the side of a square is four centimeters, then the distance between their centers is four centimeters.
00:38
And this is on a grid, so it's nice.
00:40
You just count the squares to the right and the squares up and down from one square to the next...