Originally Posted by
Aravilar
Thanks for doing this experiment. Do you mind uploading or sending me the source data?
That said, are you serious? There is no air in a vacuum, hence there is no drag. If there is no drag, terminal velocity is only limited by how far you have to fall until you reach relativistic speeds.
If I can dig it up I could just post it here.
Re vacuum, it's not very pertinent to coasting down a hill or biking to work. That's sufficiently handled with rho in the drag equations, which you utilize for terminal velocity. I think for our purposes we can consider the air density to be constant during a ride, and even disregard the actual value entirely if you're just looking for a ratio of drag coefficients (it divides out).