free falling problem (might be impossible?)
I'll type out the question exactly how it's written:
A pole vaulter comes down after barely clearing the hurdle. the hurdle is at a height "H" above the top of the soft mat on the floor. The mat has a thickness of "h". when the athlete lands on the mat he slows down at a constant rate so that his speed is 0 just before he hits the ground (suppose the mat can be squeezed to a negligible thickness).
a) Find the speed of the athlete just before he hits the mat.
b) find the acceleration of the athlete while he is in the mat.
I tried the Vf^2=Vo^2+2ad, subbing in H for d and then getting Vf=(19.62H)^1/2
figured that wouldn't work though... and i just don't think they give me enough information to be able to find anything.
Haven't tried b) yet, but i'd be glad if you guys could lead me on the right path for that as well.
