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Newton's First Law
Every object at rest, or in uniform motion, will remain in that state of motion unless compelled to do otherwise by forces acting upon it
state of uniform motion
the condition of an object when no unbalanced forces act upon it; a state of motion always refers to being at rest or in uniform motion
rate of change of velocity per unite time, or change of velocity divided by the time required for the change
Newton's Second Law
the net force of an object is equal to the product of it's acceleration and mass.
the portion of the total force that is unopposed by other forces and so will cause an acceleration; an unbalanced force means that the net force is not zero
All forces result from...
interactions between pairs of objects, each object exerting a force on the other; the two resulting forces have the same strength and act in exactly opposite directions
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