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force
a push or a pull
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touching force
a force that acts between objects that are touching
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non-touching force
a force that acts between objects that are not touching
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attract
to pull an object, even without touching it
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repel
to push an object, even without touching it
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exert
to cause a force to act on an object
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gravity
the pull between Earth and other objects
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balanced forces
multiple forces of equal strength acting on an object
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unbalanced force
multiple forces of unequal strength acting on an object
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magnetic force
the push or pull between tow magnets, or the pull of a magnet on some kinds of metal
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electomagnet
a magnet that can be turned on or off