A free, interactive physics course: calculus, mechanics, electromagnetism, waves and lab practice.
A rigorous physics course spanning single- and multivariable calculus, linear algebra, chemistry, computer science, mechanics, differential equations, electromagnetism, optics, waves, and laboratory practice — taught through short interactive lessons and practice questions.
10 unités · 100 leçons · 1 287 questions d'entraînement · 7 langues · gratuit sur le web et sur Android
Commencer ce cours gratuitementPhysics I is a physics course built for active learning. Instead of reading walls of text, you work through short lessons and answer questions where the diagram itself is the answer — drag a vector, release a pendulum, adjust a field, and watch the physics respond. The result is a course you do rather than one you skim.
It moves from the mathematical groundwork physics relies on — single- and multivariable calculus, linear algebra and differential equations — into the physical core: Newtonian mechanics, oscillations and waves, geometric and wave optics, and classical electromagnetism. Dedicated chemistry and computer-science units round out the scientific toolkit, and a laboratory unit covers measurement, uncertainty and experimental method so the theory stays tied to the real world.
It is for anyone studying physics — for a course, for exams, or on their own — and for learners who want a rigorous path instead of scattered videos. Every unit is free to start, your progress syncs across devices, and the lesson text is open-source on GitHub.
Toutes les explications des leçons de Physics I sont en lecture libre sur le web. Les questions d'entraînement et les scènes interactives sont dans l'application.
Yes. Physics I is free on Tryals, on the web and on Android. The lesson content is also open-source under a CC BY-SA licence on GitHub, so you can read it anywhere.
10 units, 100 lessons and 1,287 practice questions. It is self-paced: each lesson is short, followed by questions with instant feedback, and your progress is saved across devices.
English, Catalan, German, Spanish, French, Italian and Portuguese. You can switch language inside the app.
No formal prerequisites beyond secondary-school mathematics. The early units build the calculus and linear algebra you need before the physics that uses them, so you can start from the beginning and work up.
Many questions are interactive scenes: instead of picking a letter, you manipulate the diagram — drag a force vector, release a mass, change a field — and your answer is graded from what you did. The visual is the question, not decoration.
It is self-paced across its units of short lessons, each followed by practice questions with instant feedback. You can stop and resume anytime, and your progress is saved across devices.