vocab

3. an attraction force exerted between all mater in the universe.
5. motion of liquid or gas particles against a surface;air.
8. equal in size and opposite in direction, so the net force is zero.
10. an object is the combination of all forces acting on the object.
11. the standard unit of force in the international system of units, equal to the force that produces an acceleration of one meter per second on a mass of one kilogram.
15. any influence, such as push or pull, that causes an object to move or change its speed, direction, or shape.
16. continuous surface contact.
18. the amount or quantity of heaviness or mass.
19. a vector which measures the rate at which an objects velocity changes over a certain period of time.

1. the measure of the amount of matter in an object and its resistance to acceleration.
2. not equal in size and/or are not opposite in direction, so the net force does not equal zero.
4. a strain force due to pulling ropes, bridges, and pulleys.
6. the north and south poles of a magnetic create a magnetic force.
7. tiny bit of surface contact.
9. upward force of fluid against an object and causes objects to float.
12. the interaction between positively and negatively charged matter.
13. keeps you standing.
14. the quantity of motion of a moving body.
17. the greater the mass, the greater the speed.