What is momentum?
Physics explain everything of the world, now you can understand it
"Do you know what momentum is? In the mechanical momentum of a massive object is a vector quantity defined as the product of the mass of the object for its speed.
This is a conservative physical quantity, namely that stays the same over time in the absence of external forces applied to the object system. Sometimes the momentum vector is called linear time, to highlight its connection with the angular momentum.
Strictly speaking, however, this amount does not represent the moment of any vector.
As you can see is so difficult to understand it by reading on internet its definition but if you want to understand it easily you have only to click on this video!
Your next test will be fine and so do your homeworks."