If you read the ^^ wikipedia page, you will see the NASA 'Terminal Velocity' url complete with Calculator; https://www.grc.nasa.gov/WWW/K-12/airplane/termv.htm

If you read the ^^ wikipedia page, you will see the NASA 'Terminal Velocity' url complete with Calculator; https://www.grc.nasa.gov/WWW/K-12/airplane/termv.html https://www.grc.nasa.gov/WWW/K-12/airplane/termv.html