1. The problem statement, all variables and given/known data A projectile with mass m is fired upward with an initial speed v0. If the air drag varies with the square of speed F(v)=-kmv2 show that the projectile reaches a height of h=1/2k*ln[1+(kv0^2/g)] 2. Relevant equations F0+F(v) = mv(dv/dx) 3. The attempt at a solution I am a little confused on how to get started and tackle this problem! Any pointers? Thanks for the help!