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phsyicals
vocab
| Question | Answer |
|---|---|
| kg | measures mass |
| m/s2 | measures acceleration |
| n | measures force |
| m | measures distance |
| m/s | measures speed or velocity |
| s | measures time |
| gravity | force of attraction between 2 objects |
| friction | force betwwen two objects rubbing against each other |
| sliding friction | least amount of friction between solid objects |
| inertia | things want to keep doing what they are already doing |
| first law | inertia |
| second law | acceleration depends on an objects mass and the force on it |
| thrid law | for every object has an equal an oppsite force |
| reference point | an object that doesn't move that you can use to see if you are moving |
| control variables | the things you keep constant in an experiment |
| indentpent variables | the thing you change or test |
| dependent variables | the result or what you measure |
| basic metric units | m,l,g |