Why is it easy to rid a bicycle on level ground than running for the same distance.?

Question

Why is it easy to rid a bicycle on level ground than running for the same distance.?

Answer 1

the reduction gears on the bike multiply your effort so it's just easier.........tom

Answer 2

Rolling objects experience very little friction, so pedaling a bike is a relatively efficient way to turn muscle exertion into forward motion.  Walking, by contrast, involves a lot of vertical motion, stops, and starts, so you lose more energy to friction and it takes more effort to move the same distance.

Answer 3

if you look at the tires while you are ride a bicycle the movement you make moving the pedals is almost doubled than what you would do with the same movement walking so its like walking half the distance