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what is momentum ?

Momentum is a vector quantity that is the product of the mass and the velocity of an object or particle.

                   p = mv

The standard unit of momentum magnitude is the kilogram-meter per second. Alternatively, the gram-centimeter per second can be used to express momentum magnitude. The direction of a momentum vector can be expressed in various ways, depending on the number of dimensions involved, and is the same as the direction of the velocity vector.


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