The bike.
Even though you and the bike are in motion the positions do not change.
The bicycle.
Even though you and the bicycle are in motion the positions do not change.
You are not moving relative to the bicycle.
bicycle
Albert Einstein
Relative to the car you are motionless. Relative to the road you are moving at the speed of the car. Relative to the sun you are moving at the speed of Earth as it orbits the sun (30km a second).
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 the portion of tire touching the ground is not moving relative to the ground.
Yes, because you don't inherit the skill of riding a bicycle.
you will be riding a bicycle
I am not riding
A bicycle
Gary Marsh
That's all down to how hard you're riding. Most people will use more effort when riding IRL than riding stationary bikes.