Recent content by Destructo_Dav

The velocity I found was 7.1386. Then I set mgh = .5mv^2 78*9.8*2.6 = .5*78*v^2 I found that by v=sqrt(2gh) Then I used final momentum is equal to initial momentum + (Fnet)(deltaT) I got 0 = 556.8108 + 1.7Fnet Fnet = 327.536 N Where do I go wrong?

Homework Statement A 78kg man, standing erect, steps off a 2.6m high diving platform and begins to fall from rest. The man comes to rest 1.7s after reaching the water. The acceleration of gravity is 9.8 m/s^2 What average force did the water exert on him? Answer: 1091.94 N Homework...

So I checked out the physics class I was taking on ratemyprofessor.com and John Ross was the guy who was teaching it. He had good reviews, so I figured I'll take his class. Well, a TA is teaching it, and I won't name the person, but he isn't really a teacher--even with his PhD in astrophysics...