Question

Friction is created as two objects come into contact with each other and a frictional force is generated as the surface of one object is pushed along the other object's surface. What is this phenomenon called?

1) Frictional force
2) Contact force
3) Surface force
4) Push force

Answer 1

The phenomenon where frictional force opposes motion or attempted motion between two surfaces is called frictional force.

Step-by-step explanation:

The phenomenon described in the question is known as frictional force. This force always opposes motion or attempted motion between objects in contact. The creation of frictional force arises partially from the roughness of the surfaces in contact and requires a force to initiate and maintain motion. Additionally, frictional force can also result from attractive forces between the molecules of the two objects in contact. Rubber-soled shoes, for instance, exhibit less slipping than leather-soled shoes due to these molecular adhesive forces, which vary based on the substances making contact.