Force of motion

2. the quantity of motion of a moving body, measured as a product of its mass and velocity.
3. The push or pull on an object with mass causes it to change its velocity
7. scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
11. a net force that acts on an object to keep it moving along a circular path.
13. is a force of attraction that exists between any two masses, any two bodies, any two particles
14. for every action (force) in nature there is an equal and opposite reaction.
16. a force that keeps an object at rest.
17. 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.
18. the rate at which someone or something is able to move or operate.
19. a kind of friction (a force that opposes motion) which occurs between air and another object.
20. When two forces are the same strength but act in opposite direction

1. the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
4. a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment.
5. opposes the movement between two contact surfaces that slide against each other
6. the moving of something from its place or position.
8. method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
9. quantity that designates how fast and in what direction a point is moving.
10. the resistance that one surface or object encounters when moving over another
12. a tendency to do nothing or to remain unchanged.
15. the rate of change of velocity