Impulse | Physics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:force-pairs-and-momentum/x6679aa2c65c01e53:impulse/v/impulseImpulse 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
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