The same principle can be applied to momentum i.e, if the mass and velocity of an object remain the same, then the momentum of the object remains constant. Momentum is associated with the mass of the moving body and can be defined as the quantity of motion measured as a product of mass and velocity. The momentum formula is given by, p=mv Where, What is Momentum in Physics? The concept of Momentum in physics is very important, without which most of the theories in physics will fail. The momentum can be calculated by multiplying the mass of the substance and its velocity. In physics, momentum is of different types and forms. Let's know more about momentum and its formula . Momentum is how much something wants to keep it's current motion. This truck would be hard to stop ... ... it has a lot of momentum . Learn how to calculate momentum using the formula p = mv, where m is mass and v is velocity. Explore the concepts of change in momentum , impulse, and conservation of momentum with solved problems.