Answer: The correct answer are sliding friction and kinetic friction.
Explanation:
Friction opposes the motion of the objects. It is always directed to an opposite direction of the motion of the object.
Kinetic friction: This friction occurs when the two objects are moving relative to each other. Kinetic friction is also dynamic friction or sliding friction.
Sliding friction: When the object slides then the friction comes into the play is called sliding friction.
Static friction: When the object is not on the verge of the motion then the friction is called static friction. Here, the friction is more than the applied force. This friction occurs when the two objects are not moving relative to each other.
Therefore, the resistance to an object being pulled over a surface is called kinetic friction or sliding friction.
