Introduction to Forces and Categories of Forces

The video introduces the concept of forces, defining them as interactions that cause a push or pull on objects. It categorizes forces into contact and non-contact types, explaining each with examples. Contact forces include friction, tension, air resistance, and normal force, while non-contact forces cover gravity, magnetic, and electrostatic forces. The video also provides examples to illustrate these concepts and discusses the units of force, emphasizing that force is a vector quantity with both magnitude and direction.

What is a force and how can it be defined?

Explain the difference between contact forces and non-contact forces.

What are some examples of contact forces?

What role does friction play as a contact force?

How does the normal contact force act on an object?

Describe the concept of weight as a non-contact force.

Explain how magnetic and electrostatic forces are classified as non-contact forces.