Vocabulary Study Aid

4. pair The forces two objects apply on each other.
8. force The force that one object can apply to another object without touching it.
9. forces The forces acting on an object that combine and form a net force of zero.
10. motion A motion in which an object is moving along a curved path.
12. The amount of matter in an object.
13. forces Forces acting on an object that combine and form a net force that is not zero.
14. The attractive force that exists between all objects that have mass.
15. The gravitational force exerted on an object.

1. A measure of how hard it is to stop an object.
2. force The combination of all the forces acting on an object
3. 2nd Law of Motion The acceleration of an object is equal to the net force acting on the object divided by the object’s mass.
4. The force that resists the motion of two surfaces that are touching.
5. force A force that acts perpendicular to the direction of motion, toward the center of the curve.
6. The tendency of an object to resists a change in motion.
7. of Conservation of Momentum when one object exerts a force on a second object the second object exerts an equal force in the opposite direction on the first object.
11. force A push or pull on one object by another that is touching it