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Newton's First Law

Law of Inertia
An object at rest remains at rest
An object in motion stays in motion
...Unless a net force is applied

Newton's Second Law

a net force applied to a mass accelerates it in the direction of the force
net force=mass*acceleration, f=ma

Newton's Third Law

for every action force, there is an equal and opposite reaction force
forces always act in action-reaction pairs

Newton's Third Law

for every action force, there is an equal and opposite reaction force
forces always act in action-reaction pairs