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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 |