Horses live in nearly every part of the world. They live in the  United States, Europe, Germany, Canada, and many other countries.
Impulse & Momentum. Summary. 1  is a quantity that describes an object's resistance to stopping (a kind of moving inertia). 2  is represented by the symbol p (boldface). 3  is the product of an object's mass and velocity.  is a vector quantity (since velocity is a vector and mass is a scalar).
Definition of 'momentum'. momentum. If a process or movement gains momentum, it keeps developing or happening more quickly and keeps becoming less likely to stop. This campaign is really gaining momentum. In physics, momentum is the mass of a moving object multiplied by its speed in a particular direction.