00:01
Okay, so in this problem we have three objects.
00:04
We have the planet tatooine, which we're going to represent as this ball.
00:11
Since the planet is not moving, we can say that the planet is our inertial reference frame.
00:20
So we're going to call reference frame s.
00:24
We have then two spaceships.
00:28
Let's represent us this box.
00:29
This is the spaceship one and this is the cruiser that we're trying to catch.
00:38
We're going to call this b.
00:41
Okay, so what we have here, we know that the velocity of a relative to the planet of tatouin is 0 .9, let's see, 0 .9, 0 .8 actually.
01:05
8c, 0 .8c.
01:10
And we know that the speed of the cruiser relative to the tattooing is just 0 .6c.
01:21
Now let's remember about the concepts of relativity.
01:26
We know that we always can say that the velocity of the first object that is moving, relative to our inertial frame is v.
01:41
The velocity of the second object that is moving relative to the initial frame is u.
01:52
And the speed between the two and the speed between the two non -inertial frames is v...