Physics the study of matter, motion, energy, and force.

Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a …

This course is aligned to the high school Next Generation Science Standards (NGSS). If you’ve mastered this content and want to explore physics at the next level, we recommend our AP Physics …

In AP Physics 1, you'll learn algebra-based classical mechanics. To make sure you’re prepared with the fundamentals, we recommend completing high school physics before diving into AP Physics 1.

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

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

In AP Physics 2, you'll learn about thermodynamics, electricity and magnetism, light, and modern physics. To make sure you’re prepared with the fundamentals, we recommend completing high …

Aug 18, 2025 · Whether you’re preparing students for college-level exams or building curiosity and competence in middle school classrooms, Khan Academy’s free, flexible, and rigorous physics …

Aug 14, 2025 · Free, high-quality science resources for grades 6–12, including hands-on activities, simulations, and teacher tools—all aligned to NGSS, TEKS, and AP standards.

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 math to …