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

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 …

For our most up-to-date, mastery-enabled courses, check out [High School Physics] (https://www.khanacademy.org/science/highschool-physics), [AP Physics 1] …

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 …

Khan Academy offers free, world-class education in physics, covering forces and motion topics.

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

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

物理学研究的是决定我们身处的物质世界的基本原理。我们将从运动自身开始。然后，我们将在许多不同的实际情况中了解力、动量、能量和其它概念。为了更好地理解物理学，你需要有牢固的代数基础以 …