A field model can be used to explain how 2 objects can exert forces on each other. , Forces can be contact or non-contact depending on if the objects are touching one another physically. , Magnets can cause objects to move without touching by pushing or pulling on objects in the magnetic field., A force is a push or a pull. , Energy is need to force an object into movement. , When objects have similar polarity, they will push away or repel from each other. , When objects have opposite polarities, they will pull together. This is attraction. , An object will stay at rest unless acted upon by an outside, unbalanced force. ,

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