00:01
We have a bird.
00:01
So we know what we're dealing with.
00:04
It has a mass of 320 grams, but we want kilograms.
00:09
You're going to divide that by 1 ,000 and get 0 .32 kilograms.
00:16
And it's initially traveling at 5 .2 meters per second.
00:21
When an insect, which is flying towards it, and it has a mass of 8 grams, again divide by 1 ,000, to get kilograms, and it's traveling straight towards it.
00:36
And so in the opposite direction, so we're going to make this one negative of 34 meters per second.
00:43
And if this bird were to be eaten, excuse me, the insect was eaten by the bird, we want to know what is its speed after it just had lunch.
00:52
And so we have the bird flying this way, the insect flying straight towards it, which is why we have this negative here, which means change in direction.
01:00
And so the equation we're going to use is the conservation of momentum...