you got one short stubby cannon and you got the same darn cannon except the barrel's longer. now, you fire the cannonball, same amount of powder. [makes sound] which cannonball goes further? the long barrel? the short barrel? or same, same? short barrel. how about the people say, what? you got the same kind of powder. you got the same cannon. one, so a little bit longer, so what? same cannon. same oomph. hey, they both go the same. what do you guys say? short barrel. long barrel. some say, no, the long barrel. the cannonball go further because there's more force acting on it. true or false? answer begin with f. false. it's because there's more what? time. there's more time. the cannonball is in the barrel for a longer time being pushed, pushed, pushed, pushed, pushed, pushed, pushed. it's gonna go a lot further if the cannon is a lot longer. can you see that? okay. and all that stuff makes sense here, doesn't it, huh? so we find out this physics we're talking about is really the physics of common sense. how about you-- you're riding in a car and the brakes have failed and you