Question

why is it easier to keep your balance on a moving bicycle than on at rest​

Answer 1

Answer:

$\underline{\huge{Answer:-}}$

Actually it is easier to balance a bicycle at rest then when it is in motion. The reason for this is the conservation of the angular momentum. A bicycle has wheels that once in motion, they rotate. Each rotating wheel is generating a non zero angular momentum

Answer 2

Answer:

Newton said that bodies in motion tend to stay in motion. Add to the the momentum of the wheel rotation and you have a more stable platform to balance. There are upper and limits of course, but they allow for an easy to balance bike at a wide range of speeds.