Physics, Astronomy & Cosmology / Re: Why does double the velocity double the momentum and quadruple the KE?« on: Today at 09:12:35 »
...Yes of course I've heard of "It's not the speed that/which kills, U. It's the sudden deceleration/stopping".It’s nothing to do with physics books, just common sense.
Come on, guys. Get Ur head/s out of Ur physics books. Get real.
Two people of same weight jump from same floor of a burning building.
They both have same terminal velocity, momentum and KE.
One hits the deck, the other into a fireman’s blanket (or whatever they are called).
Change of momentum f=ma. A human body can only withstand a certain amount of g force.
Obviously, you need enough speed to get the deceleration, which is where I suspect the confusion comes from, add in crumple zones etc.
Dunces, with cars, know this, instinctively!I wonder why they are dunces?