Because of inertia
An object will keep moving until an outside force is applied.
It is your momentum of moving forward that has to be overcome before your brakes can bring the bicycle to a stop.
Because of inertia. Stuff that is moving wants to keep moving. When the bike can't go forward, it'll try to topple forward instead.
Because when you brake, the brakes stop the wheels from moving. But that doesn't stop the bike from moving. It means that the speed/force/velocity at which you were traveling was forceful enough to override the brakes. So basically, you're sliding.
Your momentum wants to keep moving forward.
It is easier to balance a bicycle rolling forward than at rest because when rolling forward, you can move the support points, the tire contact patches, from side to side merely by steering the front wheel and thus keep them under the center of mass.
Its called inertia. It takes work to stop an object that is moving, if you don't have any (as in the cases mentioned), you keep on moving.
in meet the robinsons it was keep moving forward, is that what you mean?
Yes, gravity acts on a moving bicycle. Gravity pulls the bicycle and the rider toward the center of the Earth, influencing their motion. This force helps to keep the bicycle in contact with the ground and affects its acceleration and speed.
The lever.
Albert Einstein
Claude Pepper's quote about life being like riding a bicycle means that in order to keep your balance, you must keep moving forward. Just like riding a bicycle, life requires constant effort and momentum to stay on track and avoid falling behind. It emphasizes the importance of persistence and continuous growth in facing life's challenges.
To keep moving parts moving with minimum resistance, and to prevent exposed metal parts from rusting.