False.


No, it's very similar to a discovery by a genius, but actually, heavier things fall faster. Except in a vacuum, which isn't relevant because we don't ride bikes there. The whole Gallileo-Tower-of-Pisa legend is a nice story, but it never happened. Not only because there is no actual record of it, but because it would not have worked. Drop two balls of identical cross section and differenct mass, and the heavy one will hit the ground first. It took a genius (Gallileo) to figure out that acceleration due to gravity was the same for both balls anyway. Gravity pulls harder on the heavier ball (or cyclist) but the greater inertia balances that out. Air resistance (at a given speed) pushes equally on both balls (or cyclists) but the greater momentum of the heavier one overpowers it more.

Hence, after my much more hard core buddy drags my sorry butt up a mountain, I can coast down next to him while he cranks like crazy just to keep up.