The physics archive contains legacy physics content, and is not being updated with new content. For our most up-to-date, mastery-enabled courses, check out Middle School Physics, High …

Learn physics using videos, articles, and NGSS-aligned practice exercises. Explore the fundamentals of motion and forces, non-contact interactions, energy, and waves.

Welcome to AP®︎/College Physics 1! In AP Physics 1, you'll learn algebra-based classical mechanics. To make sure you’re prepared with the fundamentals, we recommend completing …

Voltage and current are the cornerstone concepts in electricity. We will create our first mental models for these basic electrical quantities. We will also talk about power, which is what …

But with chemistry, we can start to make use of the math and they physics to start to think about how all of these different building blocks can interact to explain all sorts of different phenomena.

Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down and dirty with household items, from building your own robot to videos where we …

Explore the principles of Magnetic Resonance Imaging (MRI) and its applications in medical diagnostics on Khan Academy.

Let's think about what physics is and what topics are covered in an introductory physics course.

Any time you come across something from chemistry, physics, or atomic theory that you are not sure about, take a quick detour over to KA science to find out the basics.

Gravity, Weak, Electromagnetic and Strong