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Vehicles in Motion
Learning Set 1
| Term | Definition |
|---|---|
| coast | to move without being continuously pushed or pulled |
| chassis | the frame and wheels of a vehicle |
| axles | round shafts that connect the opposing wheels of a car |
| bearings | structures that help parts to move freely |
| motion | a change in the position of an object over time |
| speed | a measure of how fast an object is traveling |
| force | a push or a pull |
| propulsion force | a push or a pull that causes an object to move |
| gravity | the force of attraction between objects; on Earth, gravity pulls objects downward to the Earth's center |
| qualitative data | information describing qualities of objects observed (senses) but not measured |
| quantitative data | information based on measurements or counting |
| reference point | an object or location with which the position of a second object is compared over time to determine if the second object is moving |
| frame of reference | the view from which you judge the motion of another object |
| veer | (noun): a change in direction or course (verb): to change direction or course |