00:01
Okay, so this problem, where is this? cheetah is the fastest land and we'll achieve the velocity.
00:09
The peak velocity is 100 kilometers an hour, right? but that's not the key here.
00:12
The key is it says that it's going to take off.
00:16
It spots its prey at distance 100 meters away, right? so delta x is 100 meters.
00:21
And we want to find the time it takes for him to get to that prey.
00:26
And it says the average velocity is 90 kilometers per hour, right? so average velocity, because the cheetah has to start from rest, and then it has to get faster and faster and faster, and then it can travel a constant speed, right? so it's not going to hit that maximum speed of 100 kilometers an hour the whole time, right? because it can't take off going 100 kilometers an hour at the very beginning.
00:49
It's got to accelerate, right? so that's kind of just extra information.
00:53
We don't need that.
00:53
All we need is the average velocity.
00:55
Right.
00:56
And so right away, i know because i'm trying to solve this, this is going to be in seconds.
01:00
That's in meters.
01:02
This is kilometers an hour...