| A | B |
|---|
| Scalars | are quantities which are fully described by a magnitude alone |
| Vectors | Are quantities which are fully described by both a magnitude and a direction |
| Distance | Is a scalar quantity which refers to "how much ground an object has covered" during its motion |
| Displacement | Is a vector quantity which refers to "how far out of place an object is"; it is the object's change in position. |
| Speed | Is a scalar quantity which refers to "how fast an object is moving." |
| Velocity | Is a vector quantity which refers to "the rate at which an object changes its position." |
| Distance time ratio |  |
| Displacement time ratio |  |
| Instantaneous Speed | Speed at any given instant in time. |
| Average Speed | Average of all instantaneous speeds; found simply by a distance/time ratio |
| Constant speed | Object will cover the same distance every regular interval of time |
| Changing speed | Object will cover a different distance every regular interval of time |
| Acceleration | A vector quantity which is defined as "the rate at which an object changes its velocity. |
| Constant acceleration | Object will change its velocity by the same amount each time interval |
| Changing acceleration | Object will change its velocity by different amounts each time interval |
| Change in velocity time ratio |  |
| Direction of the acceleration | Depends on whether the object is speeding up or slowing down and whether the object is moving in a positive or negative direction |
| Positive acceleration. | Object has positive velocity and is speeding up |
| Negative acceleration 1 | Object is moving in the positive direction (i.e., has a positive velocity) and is slowing down |
| Negative acceleration 2 | Object is moving in a negative direction and is speeding up |
| Diagram of changing + velocity |  |
| Diagram of + constant velocity |  |
| Graph of constant velocity |  |
| Graph of changing velocity |  |
| pt graphs of positive and negative velocity |  |
| Shows a velocity of +4m/s |  |
| Shows an object that stops after 5 sec of positive rightward constant velocity |  |
