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Force is a convenient abstraction to represent mentally the pushing and pulling interaction between objects.
It is common to express forces as vectors with magnitude, direction and point of application. The net effect of two or more forces acting on the same point is the vector sum of the forces.
Newton's third law describes the forces acting on objects interacting with each other. Newton's third law can be expressed as
If there is a net unbalance between forces acting on a body the body accelerates. If the forces are balanced the body will not accelerate.