Answer:
Opposite to the net force
Explanation:
The frictional force is a constant force that resists the motion of a body.
There are two classifications of frictional force
1) Static friction
2) Kinetic friction
When a force acts on two surfaces that prevent the sliding between them is the static frictional force.
When a force acts on a moving surface that opposes the motion of the surface is called the kinetic friction.
The kinetic frictional force acts in the direction opposite to the motion and the net force.
The static and kinetic frictions are dimensionally the same quantity only the coefficient of the friction is higher for static friction.