1. The problem statement, all variables and given/known data In the vertical jump, an athlete starts from a crouch and jumps upward to reach as high as possible. Even the best athletes spend little more than 1.00 s in the air (their "hang time"). Treat the athlete as a particle and let y_max be his maximum height above the floor. To explain why he seems to hang in the air, calculate the ratio of the time he is above y_ max/2 to the tme it takes him to go from the floor to that height. You may ignore air resistance. 2. Relevant equations y=yo+vo*t+1/2a*t^(2) 3. The attempt at a solution From floor to ymax ymax=-g/2*t^(2) From ymax/2 to ymax ymax/2 = vo*t - 1/2*g*t^(2) Not sure what to do after here.