The term sliding friction refers to the resistance created by two objects sliding against each other. This can also be called kinetic friction. Sliding friction is intended to stop an object from moving.
Understanding Sliding Friction
The amount of sliding friction created by objects is expressed as a coefficient which takes into consideration the various factors that can affect the level of friction. These various factors that can impact sliding friction include the following:
The surface deformation of objects
The roughness/smoothness of the surface of the objects
The original speed of either object
The size of object
The amount of pressure on either object
The adhesion of the surface
So from the above options correct answer must be
<u>It acts in the direction opposite of motion.</u>
