# Force And Laws Of Motion ## Re: Force And Laws Of Motion

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## Re: Force And Laws Of Motion

First law:When viewed in an inertial reference frame, an object either remains at rest or continues to move at a constant velocity, unless acted upon by an external force.
Second law:The vector sum of the external forces F on an object is equal to the mass m of that object multiplied by the acceleration vectora of the object: F = ma.
Third law:When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.

## Force And Laws Of Motion

Newton's laws of motion are three physicals that, together, laid the foundation for
classical mechanics . They describe the relationship between a body and the
forces acting upon it, and its motion in response to those forces. They have been
expressed in several different ways, over nearly three centuries, and can be
summarized as follows.

## Re: Force And Laws Of Motion 