Newton's Laws of Motion

2. For every action there is an equal and opposite reaction
3. The gravitational force exerted on an object
8. A push or pull on one object by another object that is touching it
10. The combination of all the forces acting on an object
12. The amount of matter in an object
16. Forces acting on an object that combine to form a net force that is not zero
18. A push or pull on an object
19. The acceleration of an object is the net force acting on it divided by its mass

1. In group of objects the momentum will remain the same until an outside force acts upon the objects
4. A force exerted by one object on another without touching it
5. An attractive force that exists between all objects that have mass
6. A force in circular motion acting perpendicular to the direction of movement toward the center of the circle
7. The tendency of an object to resist a change in motion
9. If the net force on an object is zero the motion of the object does not change
11. Any motion in which an object moves on a curved path
13. Forces acting on an object that combine to form a net force of zero
14. A force that resists the motion of two objects that are touching
15. A measure of how hard it is to stop a moving object
17. The forces two objects apply to each other