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Force and Motion
Term | Definition |
---|---|
Position | The location of an object. |
Motion | Object's change in position relative to a reference point. |
Reference point | A place or object to which another location is compared. |
Displacement | The straight line distance between your starting and ending point. |
Speed | How quickly distance changes with time. |
Average speed | The total distance traveled divided by the total time of travel. |
Instantaneous speed | The speed of an object at a specific instant in time. |
Velocity | Speed combined with the direction of motion. |
Vector | A physical quantity that has both size and direction. |
Acceleration | A measure of how quickly velocity changes. |
Inertia | Resistance to change direction |
Friction | Resistance to move. |
Newton's First Law of Motion | An object at rest will remain at rest until acted upon an outside force, and an object in motion will remain in motion unless acted upon by an outside force. |
Force | A push or pull that acts on an object. |
Newton's Second Law of Motion | F=ma |
Net force | The combination of all forces acting on an object. |
Balanced Forces | A set of forces that cancel one another so there isno overall force on an object. |
Unbalanced Forces | A set of forces acting on an object that do not cancel each other out. |
Potential Energy | Stored Energy. PE=MGH |
Kinetic energy | Energy of motion. KE=1/2mvSqrd |