Momentum

4. a course along which someone or something moves.
7. an amount of space between two things or people.
8. the rate at which someone or something is able to move or operate.
10. a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
11. the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.
12. the speed of something in a given direction.

1. a tendency to do nothing or to remain unchanged.
2. strength or energy as an attribute of physical action or movement.
3. a coherent, typically large body of matter with no definite shape.
4. the moving of something from its place or position.
5. the standard unit of force in the metric system, defined as the force required to accelerate a mass of one kilogram by one meter per second squared
6. the rate at which velocity changes
9. keeping or showing a balance; arranged in good proportions.