Chapter 2 Vocab

2. An attractive force that exists between all objects that have mass.
5. A contact force that resists the sliding motion of two surfaces that are touching.
7. A measure of how hard it is to stop a moving object.
10. Any motion in which an object is moving along a curved path
12. In circular motion, a force that acts perpendicular to the
13. The tendency of an object to resist change in motion
15. Forces acting on an object that combine and form a net force of zero.
17. A force that one object applies to another object without touching it.

1. A principle stating that the total momentum of a group of objects stays the same unless outside forces act on the objects.
3. Law that states that for every action there is an equal and opposite reaction.
4. The gravitational force exerted on an object
6. A push or pull on a object
8. Law that states that if the net force acting on an object is zero, the motion of the object does not change.
9. The amount of matter in an object.
10. A push or a pull on one object by another object that is touching it.
11. 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.
14. The forces two objects apply to each other.
16. The combination of all the forces acting on an object.