1. The problem statement, all variables and given/known data A 65 kilogram tightrope walker falls vertically downward with a velocity of 9.9m/s. She falls into a net which stretches 1.5m vertically as it breaks her fall. What is the average net force on the walker as her fall is being broken, and what is the G force that she experiences? Assume no air resistance. 2. Relevant equations (Force)*(Change in Time) = (mass)*(Vf - Vi) (1/2)kx^2 ?? 3. The attempt at a solution Since I was not given an amount of time I am not sure how to start this problem. I know her Vf will obviously be 0 m/s. 9.9 m/s is her initial velocity. From this I can find that F*(change in time) = (65)(9.9) but I am still lost as to how to find force or change in time. I thought about using elastic potential energy (1/2 k*x^2) or gravitational potential energy (mgh) but I didn't see how this would help me (especially since I don't know the h). Could someone please give me some tips as to where to start? For G force I know that 1 G is equal to 9.81 m/s^2 but that is all.