Monumental Momentum
Cole is working with his favorite animal - pigs! He's a little concerned about this one that seems to be running at 3 m/s and weighs 272 kg. He wants to know what this pig's momentum or it's change in motion will be when she hits him.
Supposing the attack takes 3 seconds, and Cole knows the momentum will be 816kgm/s, what force will the pig hit him with?
Hmm! Maybe he wants to grab that fense post in self defence!
Now if this is a closed system, and Cole doesn't grab that fence post, what will his velocity be after the collision?
Cole weighs 91 kg and is not moving. We'll assume that the pig will stop in his tracks after she hits Cole.
Wow! That's faster than what the pig was running at, almost 3 times the speed! Hmm, do you think that could be because the pig is 3 times the Cole's size?
Home