00:01
All right, so let's say we have a force versus time graph where the force is listed in newton's, and time is in seconds.
00:08
And it looks like this, so this is two new newtons, this time interval right here is three seconds, and then this is five seconds.
00:19
And it's acting on a 1 .8 kilogram object, and so we want to know what's the impulse of the force.
00:27
So the impulse is just going to be the area under the curve.
00:30
We'll call this delta p.
00:32
So this should be two newtons times three seconds plus one half of two newtons times two seconds.
00:39
And so that's eight newton seconds.
00:45
And then for part b, all right, so the velocity of the object if it's at rest...