Forces & Motion

2. equal forces acting on an object in opposite directions
3. for every action there is an equal and opposite reaction
6. an invisible force that pulls objects toward each other
7. an object's change in position relative to a reference point
8. force = mass x acceleration
9. distance / time
10. a push or pull
11. speed in a given direction
12. the location of an object
14. a property of matter by which it remains at rest or in unchanging motion unless acted on by some external force

1. the rate at which velocity changes
4. forces that produce a nonzero net force, which changes an object's motion
5. the combined effect (the sum) of all the pushing and pulling forces actually acting on the object
7. mass x velocity
10. an object in motion tends to stay in motion & an object at rest stays at rest unless acted upon by an outside force
13. the action or process of moving or of changing place or position