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).
Impulse = Change in momentum. One focus of this unit is to understand the physics of collisions. The physics of collisions are governed by the laws of momentum; and the first law that we discuss in this unit is expressed in the above equation. The equation is known as the impulse-momentum change equation.