it's the force, which is the change in momentum (time derivatve) so if you have a large change in momentum over a small period of time, i.e. crashing into the ground, thats what kills you.
Reminds me of the time when Spiderman killed Gwen Stacy because his web wasn't elastic enough, so the sharp change of momentum exerted a huge force on her, snapping her neck.
And Spidey had to go and blame it on Green Goblin.
A Ferrari Maranello passes a ford Pinto on the 401. The Maranello is constantly accelerating at aM. The Pinto driver accelerates at aP the instant she sees the Ferrari Pass by. At the instant the two cars pass by each other, their speeds are vM, and vP, and vM>vP. At what time t=f(vm, vp, am, ap) will the pinto catch the maranello?
ok here's what i have:
since they will have travelled the same distance (x) from the time the maranello passed the pinto to when the time the pinto catches up, you can set the two equal to each other. The maranello's distance is x=(vm)t+((am)t^2)/2
The pinto's distance is x=(vp)t+((ap)t^2)/2
Set the two x's equal to each other and solve for t
I got t=2(vm-vp)/(ap-am)
I've gathered that the pintos acceleration is larger than the Maranello, and have made a graph(v/t) with vm starting over vp and the lines crossing about half way