Answer to Question #5948 in Mechanics | Relativity for kathy

Question

What is the equation for momentum?

Answer 1

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.