Changing posture (like a skydiver) alters the frontal area (
The speed depends heavily on weight, surface area, and air density. Estimated Terminal Velocity Key Factor ~120 mph (193 km/h) High surface area increases drag. Skydiver (Head-down) ~150–200 mph (240–320 km/h) Reduced surface area lowers drag. Raindrop ~20 mph (32 km/h) Low mass means drag balances gravity quickly. Peregrine Falcon (Dive) ~240 mph (386 km/h) Extremely aerodynamic shape ( Cdcap C sub d 🛠️ Variables That Change the Result Altitude: At higher altitudes, air is thinner ( is lower). This makes terminal velocity higher. File: terminal.velocity.zip ...
vt=2mgρACdv sub t equals the square root of the fraction with numerator 2 m g and denominator rho cap A cap C sub d end-fraction end-root Variable Breakdown : Mass of the falling object. : Acceleration due to gravity. (rho): Density of the fluid (usually air). : Projected frontal area of the object. Cdcap C sub d : Drag coefficient (determined by shape and "slickness"). 🌍 Real-World Examples Changing posture (like a skydiver) alters the frontal
): Pushes upward against the object; increases as the object moves faster. The Balancing Act Raindrop ~20 mph (32 km/h) Low mass means
Rougher surfaces can sometimes create a boundary layer that affects drag. 💻 Technical Note: The ".zip" Extension