Reference Terms
from Wikipedia, the free encyclopedia

Momentum

In physics, momentum is the product of the mass and velocity of an object.

Momentum has the special property that, in a closed system, it is always conserved, even in collisions.

Note:   The above text is excerpted from the Wikipedia article "Momentum", which has been released under the GNU Free Documentation License.
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July 31, 2015

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updated 12:56 pm ET