Barger, Vernon D. Department of Physics, University of Wisconsin–Madison, Madison, Wisconsin.
Last reviewed:September 2021
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The integral of a force over an interval of time. As force is applied over time to a body, the force produces an impulse, which is a vector change in the body's linear momentum. An impulse accordingly influences a body's motion and velocity (see illustration). Impulse is symbolized as J and the SI unit of impulse is the newton-second (N ⋅ s). See also: Classical mechanics; Force; Momentum; Motion; Physics; Time; Velocity
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