Drag grows with the square of speed; the power to push through it grows with the cube. Change the speed, size, shape and fluid and watch both readouts respond.
Drag force F = ½ρv²CdA
269.5 N
269.5 N
drag × 6.25 compared with 10 m/s
Power to overcome drag P = Fv
6.74 kW
6,737 W
Dynamic press.
382.8 Pa
½ρv²
Drag area
0.70 m²
Cd · A
Speed v25.0 m/s
Frontal area A2.20 m²
Drag coefficient Cd0.32
Fluid density ρ1.225 kg/m³
Shape preset — sets Cd and A together
Fluid preset
Tip: double the speed — drag grows fourfold, power eightfold. Wake width tracks Cd alone.