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Pearson Ch. 6
Forces and Motion
Question | Answer |
---|---|
a push or a pull that acts on an object | force |
a force that requires two pieces of matter to touch | contact force |
the force that results when two materials rub against each other or when their contact prevents sliding | friction |
a force that acts at a distance | non-contact force |
the force of attraction between any two objects | gravity |
the rate at which the speed or direction of motion of an object changes over time | acceleration |
the tendency of an object to resist any change in motion | inertia |
the measure of how far an object moves in a certain amount of time | speed |