Let us consider that u = 20 m/s is the velocity of a skydiver falling with an open parachute. If the air density is ϱ = 1.2041 kg/m³, the area of the open parachute is A = 7 m², and its typical drag coefficient is Cd = 1.3, we can use the equation:
Fd = 0.5⋅ϱ⋅u²⋅A⋅Cd
So, for this example, the drag force is:
Fd = 2191.5 N Read more