One of the most hilarious ineptitudes I saw on was when I commented on some story about someone getting hit by a subway train, saying how fast a typical passenger car would have to be going to match the force of an NYC subway train going one mile per hour. I don’t remember the exact number but it was pretty high.
However, one guy responded that he just didn’t believe it, that there was no way something going only one mile per hour could have that much force. A bunch of people chimed in, tried to explain the F = MA to him, but no, it would not compute in his brain.
It's not accurate to say something going that slow does or not have that much force. It has momentum. Force is change in momentum, which happens over time. Something moving very slow but is very massive will apply a very small impulse (change in momentum) to a human because the collision with the human is elastic. If the human was strapped to a board and the board was anchored, the train would crush the human, but otherwise the human is going to be pushed out of the way, whereas something going much faster but with significant less mass is going to shatter the human because the elasticity of the human is not sufficient to disperse the force fast enough.
now if we can find a way to harness a tiny subway car that can travel super fast, we could launch them into the bourgeois class and finally destroy capitalism
One of the most hilarious ineptitudes I saw on
was when I commented on some story about someone getting hit by a subway train, saying how fast a typical passenger car would have to be going to match the force of an NYC subway train going one mile per hour. I don’t remember the exact number but it was pretty high.
However, one guy responded that he just didn’t believe it, that there was no way something going only one mile per hour could have that much force. A bunch of people chimed in, tried to explain the F = MA to him, but no, it would not compute in his brain.
It's not accurate to say something going that slow does or not have that much force. It has momentum. Force is change in momentum, which happens over time. Something moving very slow but is very massive will apply a very small impulse (change in momentum) to a human because the collision with the human is elastic. If the human was strapped to a board and the board was anchored, the train would crush the human, but otherwise the human is going to be pushed out of the way, whereas something going much faster but with significant less mass is going to shatter the human because the elasticity of the human is not sufficient to disperse the force fast enough.
now if we can find a way to harness a tiny subway car that can travel super fast, we could launch them into the bourgeois class and finally destroy capitalism