1. The problem statement, all variables and given/known data The jumper is 60 kg and wants to beat the school's record jump, 1.1 m. She bends her knees a distance of .5 m before jumping. How many Newtons must Fjump be to for her to beat the record? 2. Relevant equations ma = ƩF V2 - V02 = 2a(X - X0) My teacher stated I would just need these two equations, and that I would use the latter twice. 3. The attempt at a solution Jumping up to the apex: 02 - 02 = (2)(-10)(1.1) She jumps up from rest and the velocity of a mass at the apex is zero; right after she jumps, the only force acting on her is gravity, which is -10 m/s2. I assume 1.1 to be X because she can beat the previous runner's score if she jumps 1.1000001 m, essentially 1.1. So in my solution I could say "she has to jump with a force great than _X." 60a = Fjump - 600 I need acceleration from the previous step. a) I don't know how to work in the .5 m into the equations. Would I add .5 to X? I would still get a nonsensical answer for step 1. b) What is wrong with step 1's set up?