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Physics uses simple yet elegant math to describe complex phenomena, from galaxies to biological systems. It's about understanding and predicting the universe's complexity based on simple ideas.

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

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

Unit 3: Work and energy About this unit For our most up-to-date, mastery-enabled courses, check out High School Physics, AP Physics 1, and AP Physics 2!

Oups. Il y a eu un problème. S'il vous plaît, veuillez reessayer. Oups, on dirait qu'il y a eu une erreur ! Vous devez actualiser. Si le problème persiste, dites-nous.

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

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!

Unit 2: 4th quarter: Physics Unit mastery: 0% Evolving models of the universe Universal Laws of Physics: From Aristotle to Newton's Laws Light as a wave and a particle Understanding the Cosmos

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