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

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 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.

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If you’ve mastered this content and want to explore physics at the next level, we recommend our AP Physics 1 and AP Physics 2 courses. Give us feedback on this course

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 …

AP®︎/College Physics 1 Course challenge Test your knowledge of the skills in this course.

Unit 1: Forces and Newton's laws of motion About this unit For our most up-to-date, mastery-enabled courses, check out High School Physics, AP Physics 1, and AP Physics 2!

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