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 …

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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 …

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 …

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 …

Explore how the law of conservation of energy applies to electric circuits. Calculate values for circuits and describe the impact a change will have on a circuit. Describe how and why circuit …

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

This course has been deprecated. We recommend exploring our improved High School Physics, AP Physics 1, and AP Physics 2 courses instead.

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

NGSS.HS: HS‑PS2‑1, HS‑PS2.A.1 Introduction to high school physics Position, velocity, and speed Acceleration Interpreting motion data