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 …

Physics is built on a foundation of math and it seeks to explain all phenomena in the universe. It forms the basis for other sciences like chemistry and biology. Physics uses simple yet elegant …

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

Welcome to AP®︎/College Physics 2! In AP Physics 2, you'll learn about thermodynamics, electricity and magnetism, light, and modern physics. To make sure you’re prepared with the …

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 …

Explore the concepts of work, energy, and power with engaging lessons and practice problems in AP®︎/College Physics 1 on Khan Academy.

Welcome to high school physics! Explore the behavior of the universe including forces and motion, energy, electromagnetism, and light. Explain phenomena from the grand scale of stars …

Apply the tools of motion, force, and energy to systems undergoing simple harmonic motion. Use position vs. time graphs to develop a mathematical model for the motion of a simple harmonic …

Aug 18, 2025 · Explore Khan Academy’s updated AP Physics 1 and NGSS-aligned Middle School Physics courses, featuring new videos, interactive practice, and hands-on activities to support …

Let's solve some problems to better understand the behavior of forces that act on objects, and their effects on motion. In the process, we will clear some common misconceptions.