strong force - Force that binds the nucleus of an atom, weak force - Force that controls radioactive decay, gravitational force - Force of attraction that acts between all objects in the universe, electromagnetic forces - Force that results from an interaction between particles with an electric charge via an electromagnetic field, statics - Study of objects that are at rest or at constant velocity, dynamics - Study of accelerating objects and the forces that are acting upon those objects, static equilibrium - Forces are all balanced, object is at rest, terminal velocity - The force due to drag is at a maximum and balances the a falling object's weight, causing a constant velocity.ow 3, action-reaction pairs - Forces that are opposite in direction and equal in magnitude that are acting on different objects., net forces - Sum of all the forces acting on an object,

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