Terminal Velocity: Gravity and Drag Forces Balance

Fg = Fd

In other words:

 

m·g·sinθ = 0.5·CD·A·ρ·v2

 

 How fast is terminal velocity, assuming the following?

Cd = 0.7; A = 0.5 m2; ρ = 1 kg/m3; θ = 45°; and m = 70 kg