1. The problem statement, all variables and given/known data A blimp of mass 110 kg is pulled at an angle theta = 52 degrees downwards with respect to the horizontal for D = 7 km on level ground at a constant velocity v = 14 m/s. If the coefficient of drag (K in F = Kv^2) is 0.5 kg/m, how much work is done by the person pulling? As I see this problem, the only thing that is relevant is drag, becuase there is no acceleration and the buoyancy of the blimp (not described) counter-acts gravity. I calculated K in F and got 2112880, with v^2 as 196, and K as 10780 using (1/2)mv^2. This does not seem right, help?