AP Physics 1 | Khan Academy - Conservation of linear momentum | AP Physics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/ap-college-physics-1 Linear momentum is conserved in all interactions. If the net external force on the selected system is zero, the total momentum of the system is constant. If the net external force on the selected system is nonzero, momentum is transferred between the system and the environment. Conservation of momentum can be used to determine the velocity of objects in a system immediately before or after a collision or explosion. Sections: 00:00 - Momentum of a single particle 01:00 - Conservation of linear momentum 03:20 - Calculating velocity after collision 05:43 - Sense check 09:55 - Real world applications 11:55 - Newton's third law 14:13 - Emmy Noether 14:46 - Summary ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc