Physics library | Science | Khan Academy
https://www.khanacademy.org/science/physics
WEBWelcome to the Physics library! Physics is the study of matter, motion, energy, and force. Here, you can browse videos, articles, and exercises by topic. We keep the library up-to-date, so you may find new or improved material here over time. Introduction to physics Displacement, velocity, and time Acceleration.
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