In simple language- * Ist law - inertia * 2nd law-force is directly propotional to dp/dt *3rd law- for every action there is a equal and opposite reaction
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First law:An object either remains at rest or continues to move at a constant velocity, unless acted upon by an external force.Second law:The net external forces acting on a body is propotional to the rate of change of its momentum. it results in F=ma.Third law: Every action has a reaction  equal in magnitude and opposite in direction or every action has an equal and opposite reaction.