Oscillations and mechanical waves (Khan Academy)

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Waves are responsible for basically every form of communication we use. Whether you’re talking out loud, texting on your phone, or waving to someone in a crowd there’s going to be a wave transmitting information. Learn about the basics of waves in this topic, then learn more about light waves in the topics below. (1) […]

Torque and angular momentum (Khan Academy)

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Everything you’ve learned about motion, forces, energy, and momentum can be reused to analyze rotating objects. There are some differences, though. Here, you’ll learn about rotational motion, moments, torque, and angular momentum. (1) Rotational kinematics Angular motion variables Relating angular and regular motion variables Relationship between angular velocity and speed Rotational kinematic formulas (2) Torque, […]

Impacts and linear momentum (Khan Academy)

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Momentum ties velocity and mass into one quantity. It might not be obvious why this is useful, but momentum has this cool property where the total amount of it never changes. This is called the conservation of momentum, and we can use it to analyze collisions and other interactions. Bam! (1) Momentum and Impulse Introduction […]

Work and energy (Khan Academy)

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“Energy” is a word that’s used a lot. Here, you’ll learn about how it’s one of the most useful concepts in physics. Along the way, we’ll talk about work, kinetic energy, potential energy, conservation of energy, and mechanical advantage. (1) Work and energy Introduction to work and energy Work and energy (part 2) Conservation of […]

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 […]