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Curated by: Khan Academy India - English (26 videos)
"Ever wondered how objects collide and move in two dimensions? In this video, we break down elastic and inelastic collisions in 2D with simple explanations, equations, and examples. 🔍 What You’ll Learn: ✔️ Difference between elastic & inelastic collisions ✔️ Conservation of momentum in two dimensions ✔️ Energy changes in different collisions" Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/in-in-class11th-physics 0:00 - Intro: Collisions in 2D 0:09 - What is a collision? 0:20 - Elastic vs. Inelastic collisions 0:30 - Elastic: Momentum & energy conserved 0:43 - Inelastic: Momentum conserved, energy lost 1:07 - Example: Car crash (inelastic) 1:15 - Perfectly inelastic collision 1:34 - Elastic collision in 2D 2:22 - Resolving velocity components 2:54 - Conservation of momentum & energy 3:06 - Momentum conservation (x & y) 3:30 - Kinetic energy conservation 4:02 - Momentum equation (x-direction) 4:38 - Momentum equation (y-direction) 6:23 - Solving for unknowns 7:10 - Conclusion Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Chandan Ganotra