unit 7

So there's this dog cat super hero type thing (which is about 20 kg) and it is going through the air at about 30 m/s. It's velocity stays constant, and of course so does its mass. So according to many, the momentum of a system should always be conserved. The equation for momentum (p) is p=mass x velocity. So if this thing has an initial momentum of 60 m/s, it should also have a final momentum of 60 m/s. The momentum stays the same throughout the movement, because the mass and velocity of the system also stay the same. So there it is, momentum of a system is always conserved!!!