Hi everyone! I am looking for an equation for a projectile which takes into account air resistance. I preferably want 1 equation, which can output the desired elevation. I have the initial velocity, range and change in elevation. I have this http://en.wikipedia.org/wiki/Trajectory_of_a_projectile#Angle_required_to_hit_coordinate_.28x.2Cy.29 And was wondering if it could be modified to account for air resistance?