NEWTON'S LAWS OF MOTIONForce and MotionCP-03 Page 4Rev. 0Newton's Laws of Motion SummaryNewton's First Law of MotionAn object remains at rest (if originally at rest) or moves in a straight line withconstant velocity if the net force on it is zero.Newton's Second Law of MotionA particle with a force acting on it has an acceleration proportional to themagnitude of the force and in the direction of that force.Newton's Third Law of MotionThe forces of action and reaction between interacting bodies are equal inmagnitude and opposite in direction.- or -For every action there is an equal and opposite reaction.Newton's Universal Law of GravitationEach and every mass in the universe exerts a mutual, attractive gravitationalforce on every other mass in the universe. For any two masses, the force isdirectly proportional to the product of the two masses and is inverselyproportional to the square of the distance between them.SummaryNewton's laws of motion are summarized below.