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5. measures weight or force of gravity when an object is hung from its hook. (Newtons)
6. the force acting on an object that is moving through air flowing in the opposite direction. The air “resists” the object's movement, slowing it down by friction.
7. forces of equal magnitude and opposite direction that act on different object
9. A measurement of the force of gravity on an object. Can change with location.
10. The combination of all the forces acting on an object added together.
11. unit of measure for force
12. A force that moves an object away from the action force.
14. The resistance force that one surface or object encounters when moving over or through another material (such as a liquid or a gas).
15. A push or pull that can change the motion of an object. It has a size and direction.
17. When you push or pull the object, that is the action force.
19. the acceleration gained by an object due to gravitational force.
21. The downward pull toward the center of the Earth.
22. The amount of matter in an object. Does not change with location.

1. Forces acting on an object that are equal in size and opposite in direction.
2. the force that surfaces exert to prevent solid objects from passing through each other.
3. A force that moves an object toward the action force.
4. A non-contact pulling force that occurs between two objects with mass.
8. steady speed achieved by an object freely falling through a gas or liquid
13. To apply a force
16. When forces acting on an object are not equal or not in opposite directions
18. used to show the size and direction of all forces acting upon an object in a given situation.
20. When an object is moving because gravity is the only force acting on it.