Chapter 2 Vocab Words

3. a principle stating that the total momentum of a group of objects stays the same unless outside forces act on the objects
5. Law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object's mass
7. The combination of all the forces acting on an object
8. The tendency of an object to resist a change in its motion
10. The gravitational force exerted on an object
11. A push or a pull on an object
13. A force that one object applies to another object without touching it
17. Any motion in which an object is moving along a curved path
18. a measure of how hard it is to stop a moving object
19. A contact force that resists the sliding motion of two surfaces that are touching

1. Forces acting on an object that combine and form a net force that is not zero
2. Forces acting on an object that combine and form a net force of zero
4. Law that states that if the net force acting on an object is zero,the motion of the object does not change
6. Law that states that for every action, there is an equal and opposite reaction
9. In circular motion, a force that acts perpendicular to the direction of motion,toward the center of the curve.
12. A push or a pull on one object by another object that is touching it
14. An attractive force that exists between all objects that have mass
15. The amount of matter in an object
16. the forces two objects apply to each other