Final answer:
Contact forces occur when objects touch each other, including examples like friction, tension, and compression. The normal force acts perpendicular to the surface of contact to prevent objects from passing through each other.
Explanation:
Contact forces occur when objects touch each other. Examples include friction, tension, and compression. A normal force is a type of contact force that acts perpendicular to the surface of contact, preventing objects from passing through each other.
Learn more about Contact forces here:
https://brainly.com/question/15682593
