| A | B |
|---|
| scalars | quantity that describes magnitude but not direction |
| vectors | quantities that desribe magnitude and direction |
| distance | the scalar quantity that desribes the length of a path between two points |
| position | a scalar quantity that desribes an object's position in relation to a reference point |
| time interval | the change in time |
| displacement | the straight line distance from one point to another |
| uniform motion | a motion in which speed an direction are constant |
| motion diagram | shows an objects position at a given time |
| position time graph | a graph that has time on the x (horizontal) axis and and position on the y (vertical) axis |
| best fit line | line that closely fits the gerneral shape of the data points |
| slope | refers to whether the line of a graph goes up, down or is flat |
| speed | a scalar quantity describing how fast an object travels in a given time interval |
| velocity | a vector quantity is the displacement of an object during a time interval |
| acceleration | a vector quantity that describes how fast the velocity is changing |
| deceleration | acceleration that is OPPOSITE to the direction of motion |
| velocity time graph | a graph that has time on the x axis and velcoity on the y axis |
| constant acceleration | an object whose velocity is chaning at a constant rate |
| average acceleration | slope of a velocity time graph |
| gravity (acceleration due to gravity) | acceleration caused by gravity, equal to 9.8 meters per second squared |
| air resistance | slows down falling objects due to their shape |
