1. Position
The location of an object

2. Direction
The path that an object is moving or facing

3. Speed
The change in distance over the time needed to move that distance

4. Force
A push or a pull that changes the motion or position of an object

5. Motion
A change in an object’s position, direction, or location

6. Balanced Forces
Forces on an object that do not change the motion of the object

7. Unbalanced Forces
Forces on an object that cause a change in the motion of the object

8. Net Force
The combination of all forces acting on an object

9. Average Speed
Average distance an object moves divided by the time needed to move that distance

10. Distance
Measurement from one point to another point

11. Time
Measurement of an interval from one event to another event

12. Velocity
A measure of speed in a particular direction

13. Inertia
An objects tendency to resist changing its motion

14. Friction
A force that resists motion between two touching surfaces

15. Weight
A measure of the gravitational force between an object and the planet or moon where the object is

16. Gravity
The pull that all objects with mass exert on matter

17. Acceleration
The rate at which velocity changes; happens anytime the speed or direction changes