Hmmm. I don't think velocity is a force at all. Velocity is a vector that describes the speed and the direction of an object. It is the inertia of a mass that is related to resistance to motion. In fact, the amount of energy it takes to change an object's velocity is an indirect measure of the object's mass.
Gravity.
A force that resists motion is inertia.
Inertia is a bodies resistance to velocity change upon application of a force, so essentially its directly proportional to its mass.
Force that resists motion is frictional force, viscous drag
Friction
Friction
Friction
That force is friction.
Frictional force resists movement. In order to set an object into motion (or accelerate an already moving object), the force of friction must be overcome.
Any net force will change an object's velocity. In the case of a centripetal force, it changes the direction of the movement, and therefore its velocity.
friction
friction resistance opposition impedance These all have a slightly different connotation and depend on the type of force under consideration.