Chapter 2 Vocab Words

2. a push or pull on one object while another object is touching it
4. Law that states that for every action there is an equal and opposite reaction.
6. The forces two objects apply to each other.
7. the tendency of an object to resist change in motion
8. in circular motion a force that acts perpendicular to the direction of motion toward the center of the curve
12. gravitational force exerted on an object
13. Law states that the acceleration of an object is equal to the net force exerted on the object divided by the object's mass.
14. an attractive force that exists between all objects that have mass
16. the amount of matter in an object
17. forces acting on an object that combine and form a net force that is not zero
18. a force that one object applies to another object without touching it
19. a push or pull on an object

1. A principal stating that the total momentum of a group of objects that stays the same unless outside forces act on the objects.
3. the combination of all the forces acting on an object
5. law states that if the net force acting on an object is zero the motion of an object doesn't change
9. Any motion in which an object is moving along a curved path.
10. A measure of how hard it is to stop a moving object.
11. forces acting on an object that combine and form a net force of zero
15. a contact force that resists the sliding motion of two surfaces that are touching