Terminal Velocity Time at Start s Speed at Start  m/s Distance at Start m Time at End s Effective Frontal Area  (0.4 to 0.7 is typical). m2 Drag Coefficient  (Use default value). dimensionless Air Density (or Air Density from Temperature, Barometric Pressure, and altitude). kg/m3     Sea Level   1.226 1500 Meters   1.056 3000 Meters   0.905 Weight of Rider and Bike. kg Coefficient of Rolling Resistance. dimensionless Wooden Track 0.001 Smooth Concrete 0.002 Asphalt Road 0.004 Rough but Paved Road 0.008 Slope. Rise/Run(decimal) Available Power W