Newton's Laws of Motion

Newton's Laws of Motion is one of the Clasical branches in physics.  These three laws show the relations between the forces acting on a body and the motion of the body.


Science Branches

Natural Science
Physical Science
Classical Physics
Mechanical Physics
Newton's Laws of Motion


Newton's First Law

Newton's first law, also known as the Law of Inertia, a object at rest remains at rest and a object in motion continues to move at a constant velocity unless acted upon by an external force.


Newton's Second Law

force appliedNewton's second law, also known as the Law of Resultant Force, is the force that causes an object or mass to accelerate.  The greater the mass to be accelerated, the greater the force required to move the mass.


Newton's Second Law Formula

\(\large{ F = m  a  }\)  (if the object is free fall with on other force other than gravity) 


\(\large{ F }\) = force

\(\large{ m }\) = mass

\(\large{ a }\) = acceleration

Solve for:

\(\large{ m = \frac {F}{a}  }\)

\(\large{ a = \frac {F}{m}  }\)


Newton's Second Law for Rotation Formula

\(\large{ \tau = I  \alpha  }\)   


\(\large{ \tau }\)  (Greek symbol tau) = rotational force

\(\large{ I  }\) = moment of inertia

\(\large{ \alpha }\)  (Greek symbol alpha) = angular acceleration


Newton's Third Law

Newton's third law, also known as the Law of Actions and Reaction, is for every action there is an equal and opposite reaction.


Newton's Third Law Formula

\(\large{ F_1 = -F_2 }\)   


\(\large{ F }\) = force


Mathematics Symbols

Nomenclature & Symbols for Engineering, Mathematics, and Science 

List of all Site categories  -  List of all Tags  -  List of all Site Glossaries


Tags: Equations for Motion