Newton's laws of Force and Motion / বল ও গতির বিষয়ে নিউটনের সূত্র

Newton's laws of Force and Motion / বল ও গতির বিষয়ে নিউটনের সূত্র .

First law: In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.
Second law: In an inertial reference frame, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object .
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.