Chapter 2 Vocab

6. the combination of all forces acting on an object
7. the acceleration of an object is equal to the net force acting on the object divided by the object’s mass
11. a push or pull on one object by another that is touching it
13. a force that acts perpendicular to the direction of motion, toward the center of the curve
14. if the net force on an object is zero, the motion of the object does not change
15. forces acting on an object that combine and form a net worth of zero
16. the total momentum of a group of objects stays the same unless outside forces act on the objects.
17. any motion which an object is moving along a circular path

1. the forces two objects apply to each other
2. a force that resists the motion of two surfaces that are touching
3. the tendency of an object to resist a change in its motion
4. an attractive force that exists between all objects that have mass.
5. a measure of how hard it is to stop a moving object
6. a force that one object can apply to another object without touching it
8. the amount of matter in an object
9. when one object exerts a force on the second object, the second object exerts an equal force in the opposite direction on the first object.
10. the gravitational force exerted on an object.
12. a push or pull on an object