| A | B |
|---|
| accelerate | increase speed or change direction |
| variables | factors that affect results of an experiment |
| average speed | how fast something moves over a distance |
| conceptual model | description based on ideas |
| deceleration | negative change in speed |
| dependent variable | plotted on the y axis |
| free fall | falling acceleration due to gravity |
| graphic model | a graph show relationship between variables |
| gravity | attractive force between two objects with mass |
| independent variable | plotted on the x axis controlled by experimenter |
| instantaneous speed | speed of an object at a specific point |
| physical model | models made of materials which can be touched and examined |
| scientific model | method of representing the relationship bewteen variables |
| scientific method | process to gather information |
| hypothesis | testable prediction |
| energy | ability to do work, cause change |
| acceleration | change of speed over time |
