1. The problem statement, all variables and given/known data A particle falls in Earth's gravity. The force of air resistance is F = −αv v where v is the velocity, v is the speed, and α is a constant. (The direction of the force is opposite to the velocity, and the magnitude of the force is αv^2.) If the terminal speed is 20.2 m/s and the mass is 2.6 kg, determine the constant α. 2. Relevant equations F=mdv/dt 3. The attempt at a solution m(dv/dt)=mg-aplhav thus v(t)=(mg/aplha)(1-e^(-(alpha/m)t)) so aplha if im correct should be (mg/Vterminal)=1.263, however im not sure of the units for this. My guess would be kg/s however my homework programs says that is incorrect, and also I feel I may have neglected the [/B]v[/B] and the magnitude of the opposing force causing a wrong answer. If someone could shed some light on this it is greatly appreciated.