## Encyclopedia > Impulse

Article Content

# Impulse

In classical mechanics, an impulse changes the momentum of an object. An impulse is calculated as the integral of force with respect to duration.

$\mathbf{I} = \int \mathbf{F} dt$

Using the definition of force yields:

$\mathbf{I} = \int \frac{d\mathbf{p}}{dt} dt$
$\mathbf{I} = \int d\mathbf{p}$
$\mathbf{I} = \Delta \mathbf{p}$

The term can also refer to any short-duration signal such as a nerve impulse, or a notional signal used to calculate impulse response[?], in the continuous case the Dirac delta function.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia
 Search over one million articles, find something about almost anything!

Featured Article
 List of Switzerland-related topics ... Sarner[?] (Sarner See[?]) Lake Sempach [?] (Sempacher See[?]) Lake Thun[?] (Thuner See[?]) Lake Zurich (Zürichsee) Limmat Linth List of cities ...