On Demand

One-dimensional motion

Let's explore the ideas of displacement, velocity, and acceleration. We'll do exciting things like throw things off cliffs (far safer on paper than in real life) and see how high...

Khan Academy

On Demand

Two-dimensional motion

Now that we understand velocity and acceleration well in one-dimension, we can explore scenarios that are even more fun. With a little bit of trigonometry, we can think about...

Khan Academy

On Demand

Forces and Newton's laws of motion

Let's learn about what a force is and how Newton changed the world's view of how reality works.This course contains 7 segments:Introduction to forces and free body diagramsThis...

Khan Academy

On Demand

Work and energy

"Energy" is a word that's used a lot. Here, you'll learn about how it's one of the most useful concepts in physics. Along the way, we'll talk about work, kinetic energy, potential...

Khan Academy

On Demand

Fluids

Atmospheric pressure is like an invisible friend who is always squeezing you with a big hug. Learn more about pressure, buoyant force, and flowing fluid so you can appreciate the...

Khan Academy

On Demand

Thermodynamics

Heat can be useful, but it can also be annoying. Understanding heat and the flow of heat allows us to build heat sinks that prevent our computers from overheating, build better...

Khan Academy

On Demand

Electric charge, field, and potential

Electric forces hold together the atoms and molecules in your eyes which allow you to read this sentence. Take a moment and learn about the force that holds our bodies...

Khan Academy

On Demand

Magnetic forces, magnetic fields, and Faraday's law

Magnetic fields are extremely useful. The magnetic field of the Earth shields us from harmful radiation from the Sun, magnetic fields allow us to diagnose medical problems using...

Khan Academy

On Demand

Electromagnetic waves and interference

Light can seem mysterious. What is light made out of? What causes color? How do 3D movies work? Learn about some of the mysterious properties of light in these tutorials.This...

Khan Academy

On Demand

Geometric optics

Light waves can be bent and reflected to form new and sometimes altered images. Understanding how light rays can be manipulated allows us to create better contact lenses, fiber...

Khan Academy