Question

What is friction? In which direction does it act?

Answer 1

Answer:

Frictional force offers the resistance to the applied force opposing its motion. Thus, it always acts in the direction opposite to that of the object in motion. If force is applied to the left, then friction acts in the right.

Answer 2

Answer:

Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces, such as the traction needed to walk without slipping, may be beneficial,

It act in direction opposite to motion.