00:02
All right, so this problem we're given in mass, mass 1, 1 ,5 grams, it's 575 grams, it's going 3 .5 meters per second.
00:14
We have another mass, mass 2, which is 1 .25 grams, and it initially starts off with zero velocity.
00:22
So the first thing we want to do is we want to find out the initial momentum.
00:27
You know the second mass is not moving, so it has no remittance.
00:31
The momentum of the first object and i'm going to convert these grams to kilograms.
00:44
It's going to be 0 .5 .75 kilograms times 3 .5 meters per second, which equals 2 .0 .1 .25 kilograms meters per second.
01:08
Now, we know that after the collision momentum of the second object, okay we're going to provide the mass kilograms again 0 .4 to 5 kilograms times 4 .03 liters per second, which is equal to 1 .7 -1 -275.
01:52
So what is the momentum of the first object now? well, to find that out, we just have a great say, let's just do, let's just do, and put your fake.
02:28
Mertim of object one, the momentum of object two.
02:32
The fourth equation has to be equal to the new momentum of both.
02:40
And we know that this is real.
02:47
So we're going to say two point of zero...