Uploaded July 2026 | Updated September 2026, 2 weeks ago
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An object’s linear momentum is the product of its mass and velocity. Momentum is a vector quantity and has the same direction as the velocity. The rate of change of a system’s momentum is equal to the net external force exerted on that system. Impulse is defined as the integral of the net force exerted on an object or system over a time interval. The impulse-momentum theorem relates the impulse delivered to an object and the object’s change in momentum.
Sections:
00:00 - Momentum and Newton's second law
02:23 - Impulse and the impulse-momentum theorem
04:32 - Catching a baseball
08:17 - Force vs. time graphs
13:54 - Momentum vs. time graphs
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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now. khanacademy.org/science/ap-physics-c-mechanics
An object’s linear momentum is the product of its mass and velocity. Momentum is a vector quantity and has the same direction as the velocity. The rate of change of a system’s momentum is equal to the net external force exerted on that system. Impulse is defined as the integral of the net force exerted on an object or system over a time interval. The impulse-momentum theorem relates the impulse delivered to an object and the object’s change in momentum.
Sections:
00:00 - Momentum and Newton's second law
02:23 - Impulse and the impulse-momentum theorem
04:32 - Catching a baseball
08:17 - Force vs. time graphs
13:54 - Momentum vs. time graphs
------------------
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: khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: khanacademy.org/contribute?utm_source=youtube&utm_medium=desc
