Motion, forces, and energy | Physics | Khan Academy - Impulse | 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 Impulse is a change in an object's momentum. The impulse experienced by an object is equal to the net force acting on the object multiplied by the length of time the force acts (Δp = ΣFΔt). The same impulse can be caused by a large force acting for a short time, or a small force acting for a long time. 00:00 - Intro 00:52 - What is impulse? 03:54 - Which car gains more speed? 07:36 - Egg dropped on a stone breaks. Why? 11:09 - Crumple zones ------------------ 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