Forces Vocabulary

3. a quantity that possesses both magnitude (a numerical value) and direction
5. An object at rest will stay at rest
6. force that opposes motion or attempted motion between surfaces in contact
7. a graphical representation of all the external forces acting on a single object.
8. the support force exerted by a surface on an object in contact with it, acting perpendicular to the surface
10. object and its resistance to acceleration
12. the force of gravity on an object's mass
13. a force exerted by an object over a distance without direct contact, through the creation of a field
14. a single vector that represents the combined effect of two or more vectors, such as forces
16. foundation of classical mechanics

1. the unique point where the mass of a system is perfectly balanced, or the mass-weighted average position of all its particles
2. change in its speed or direction
4. the overall, resultant force acting on an object, found by adding all individual forces as vectors
9. a state of balance where opposing forces or influences are equal, resulting in no net change over time
11. the rate at which an object's velocity changes over time
15. distance traveled divided by the time taken