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8th Unit 5
Motion key Terms
| Term | Definition |
|---|---|
| displacement | an object’s overall change in position; the SI unit is the meter (m) |
| distance | a measure of how far an object has traveled; the SI unit is the meter (m) |
| average speed | an object’s total distance traveled divided by the time elapsed. The SI unit is meters/second (m/s) |
| average velocity | an object’s displacement divided by time elapsed. The SI unit is meters/second (m/s) |
| constant velocity | velocity that remains unchanged |
| instantaneous velocity | the velocity of an object at a specific point in time |
| scalar | a quantity having only magnitude, not direction |
| vector | a quantity having direction as well as magnitude |
| average acceleration | the rate of change of velocity divided by time elapsed. The SI unit for acceleration is meters per second squared (m/s2). |
| constant acceleration | acceleration that does not change. |
| instantaneous acceleration | acceleration at a given moment in time. |
| kinematics | the science of describing the motion of an object. |
| free fall | an object in motion only under the influence of the force of gravity. |
Created by:
darrin_evans
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