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Ch16 - Motion
Physics
Question | Answer |
---|---|
motion | The state in which one object's distance from another is changing. |
reference point | A place or object used for comparison to determine if an object is in motions. |
International System of Units | A system of measurement based on multiples of ten and on established measures of mass, length, and time. |
meter | The basic SI unit of length. |
speed | The distance an object travels per unit of time. |
average speed | The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time. |
instantaneous speed | The speed of an object at one instant of time. |
velocity | Speed in a given direction. |
slope | The steepness of a line on a graph, equal to its vertical change divided by its horizontal change. |
acceleration | The rate at which veloctiy changes. |
spped = distance/time | |
slope = rise/run |