00:01
All right, so let's say we have a particle's position as a function of time, and it kind of looks like this, and then goes back down.
00:13
And so this time, this is our time axis, presumably this is in seconds.
00:20
This is at four, and then the next intercept is at nine, like that.
00:27
So we want to find the intervals at which the particle.
00:32
Is, the velocity is increasing.
00:36
We're told it has inflection points, so this is 1 .7 seconds, and then this is 6 .9 seconds.
00:45
And then a point of inflection at like 4 .3 or something like that.
00:49
So the velocity is going to be the slope of this position versus time graph...