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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) |