Chapter 2

8. A principle stating that the total momentum of a group of objects stays the same unless outside forces act on the objects.
9. Is a attractive force that exists between all objects that have mass.
10. Law that states that the acceration o an object is equal to the net force exerted on the object divided by the objects mass
11. The tendency of an object to resist a change in its motion.
13. A force that one object can apply to another object without touching it.
15. In circular motion, a force that acts perpendicular to the direction of motion toward the center of the curve.
16. Is the gravitational force exterted on a object.
17. Forces acting on an object that combine and form a net force of zero.

1. Law that states that if the net force acting on on object is zero, the motion of the object does not change.
2. The combination of all the forces acting on a object
3. The forces two objects apply to each other.
4. Is a force that resists the motion of two surface that are touching.
5. Any motion in which an object is moving along a curved path.
6. A push or pull on one object by another that is touching it.
7. A measure of how hard it is to stop a moving object.
10. Law that states that for every action there is an equal and opposite reaction.
12. Is the amount of matter in a object.
14. a push or pull of an object