gravity it pulls all objects down
The downward force acting on an object in free fall is Gravity.
free fall
Gravity.
The two states that exist when the only force acting on an object is gravity are free fall and equilibrium. In free fall, the object is accelerating downward due to gravity, while in equilibrium, the object is either at rest or moving at a constant velocity with no net force acting on it.
When the bike is not moving, there is an equal force between the bike and a surface. If you are seated on the bike in a still position, you and the bike would create an even balanced force. If you accelerated, you would create an unbalanced force.
free fall
It is said to be in free fall.
Objects accelerate as they fall to the ground due to the force of gravity acting on them. As the object falls, the force of gravity causes it to increase in speed, resulting in acceleration. This acceleration is a result of the unbalanced force acting on the object.
An object in free fall is one that has only the force of gravity acting upon it.
You're probably thinking of "free fall".
It is your weight, which manifests as a downward force exerted by your body, although it is also an acceleration to a greater force if you fall.
Zero - otherwise it would fall out of the sky.