Centripetal force and gravitation (Khan Academy)

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Learn about centripetal acceleration and centripetal force. Also, learn about the universal law of gravitation and gravitational orbits. (1) Circular motion and centripetal acceleration Race cars with constant speed around curve Centripetal force and acceleration intuition Visual understanding of centripetal acceleration formula What is centripetal acceleration? Optimal turns at Indianapolis Motor Speedway with JR Hildebrand […]

Forces and Newton’s laws of motion (Khan Academy)

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This is the meat of much of classical physics. We think about what a force is and how Newton changed the world’s (and possibly your) view of how reality works. (1) Newton’s laws of motion Newton’s first law of motion Newton’s first law of motion concepts More on Newton’s first law of motion What is […]

Two-dimensional motion (Khan Academy)

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You understand velocity and acceleration well in one-dimension. Now we can explore scenarios that are even more fun. With a little bit of trigonometry (you might want to review your basic trig, especially what sin and cos are), we can think about whether a baseball can clear the “green monster” at Fenway Park. (1) Two-dimensional […]

One-dimensional motion (Khan Academy)

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In this tutorial we begin to explore ideas of velocity and acceleration. We do exciting things like throw things off cliffs (far safer on paper than in real life) and see how high a ball will fly in the air. (1) Displacement, velocity, and time Preparing to study physics Introduction to physics What is physics? […]

Khan Academy

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Khan Academy is perhaps the best known free collection of online courses. The subjects span a great range of topics, including everything from math and science to art history. According to their about page: Our mission is to provide a free, world‑class education for anyone, anywhere. A full list of the subjects they offer is […]