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Science 7 10-3/4
Science 7 10-3
| Question | Answer |
|---|---|
| inertia | object resists change in motion |
| mass | measures the amount of inertia an object has |
| Newtons 1st Law | object in rest stays at rest, object in motion stays in motion - unless acted upon by unbalanced force |
| Newton's 2nd Law | acceleration depends on objects mass and net force acting on it |
| Increase acceleration | increase force or decrease mass |
| Newton's 3rd Law | equal and opposite force, action-reaction |
| momentum | mass times velocity |
| law of conservation of momentum | total momentum of objects stays the same (conserved) unless outside force acts on it |
| two moving objects | momentum of one object increases and momentum of other decreases |
| one moving object | all momentum transferred from moving object to nonmoving object (moving stops, nonmoving goes) |
| friction | outside force that causes momentum not to be conserved (it is released) |