Question

the force acting along the two surface in contact which always opposes the motion true and false​

Answer 1

Answer:The normal force is one component of the contact force between two objects, acting perpendicular to their interface. The frictional force is the other component; it is in a direction parallel to the plane of the interface between objects. Friction always acts to oppose any relative motion between surfaces.

Answer 2

False friction opposes the motion when it is in contact