What is the formula for momentum in physics?

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In classical physics, momentum is the product of an object's mass times it's velocity, so the formula would be written like this:

p = m x v, or momentum = mass times velocity.

Momentum is a characteristic that can be applied lots of different ways, but in physics, an object that has a larger mass and a velocity constant will produce more momentum. Or, you can increase the other quantity, and increase the velocity to produce a larger momentum. Momentum is closely associated with inertia, the tendency of objects to resist changes in motion. An object with a larger mass tends to have a larger inertia, a larger tendency to resist changes in motion, whether it is moving, or sitting still. So objects with mass and velocity create a certain amount of momentum while they are moving, and that momentum is directly related to how much mass there is and how fast that mass is moving.

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