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Answer on Mechanics | Relativity Question for kathy

Question #5948
What is the equation for momentum?
Expert's answer
In classical mechanics, linear momentum or translational momentum (SI unit kg•m/s, or, equivalently, N•s) is the product of the mass and velocity of an object:
P = mV.
Like velocity, linear momentum is a vector quantity, possessing a direction as well as a magnitude. Linear momentum is also a conserved quantity, meaning that if a closed system is not affected by external forces, its total linear momentum cannot change.

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