1. The problem statement, all variables and given/known data Hi guys, I am working through a very long problem and I am stuck at this part. So I have a 70kg human being launched at a 90 degree angle at 15mph. I need to figure out how high in the air he will get before velocity reaches zero again and he begins to fall. 2. Relevant equations Vf = Vi + at Rearranged to: a = (Vf-Vi)/ t A- time Vi- initial velocity Vf- final velocity t- -9.8m/s^2 3. The attempt at a solution After I rearranged the problem I got a = (0-2.5)/-9.8 a = .255 Now I used D= Vi*t (1/2) a t ^2 6.25 (.255) = 1.59 1.59 + 1/2 (-9.81)(.255)= 1.27 m Is this correct??