Contact Forces Quiz

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What is a contact force?

A contact force is any force that occurs as a result of two objects making contact with each other.

Give two examples of everyday situations where contact forces are at work.

Pushing a car or kicking a ball.

How are contact forces often decomposed?

Contact forces are often decomposed into orthogonal components, one perpendicular to the surface(s) in contact called the normal force, and one parallel to the surface(s) in contact, called the friction force.

Are all forces contact forces? Give an example of a force that is not a contact force.

<p>No, not all forces are contact forces. The weight of an object is an example of a force that is not a contact force.</p> Signup and view all the answers

What are body forces and how do they differ from contact forces?

<p>Body forces, such as gravitational forces, electrical forces, and magnetic forces, can exist without contact occurring, unlike contact forces which require two objects to make contact.</p> Signup and view all the answers