We formulate the modified law textually and mathematically and comment briefly on the implication of our modification to the theory and education of classical and relativistic physics.

To rectify the apparent inconsistency, we propose a natural modification of the first law, which incorporates the case of uniform circular motion. An immediate corollary for the special case of uniform motion is that Newtonian kinematics are inconsistent with Newton's first law and are, instead, consistent with Galileo's definition of inertial motion.

In this short note, we show, based on Newton's kinematics, that, contrary to the conventional differentiation between rectilinear and circular systems of motion, the two are dynamically equivalent, such that the set of laws describing the dynamics of one system correspond to an identical set of laws describing the dynamics of the second. This differentiation between the two types of motion has resulted in the aftermath in different analytical treatments of the two types, both in classical and relativistic kinematics. Accordingly, ' inertial motion ' means uniform rectilinear motion, while uniform circular motion is considered to be a noninertial, accelerated motion. Newtons laws of motion Download as PPT, PDF 13 likes 22,947 views. It states that, unless acted upon by a net unbalanced force, an object will remain at rest, or move uniformly forward in a straight line. Newtons laws of motion - Download as a PDF or view online for free. The key to understanding the third law is to realize that the action and reaction forces act on two different objects.Newton's first law is expressed in textual form. Newton’s Third Law In the Principia, Newton’s third law states: “To every action there is always opposed an equal reaction: or the mutual action of two bodies upon each other is always equal, and directed to contrary parts.” Action and Reaction forces will be equal in magnitude and opposite in direction, and these forces will act on different objects. Usually written in equation form as: Fnet=ma Fnet stands for net force m stands for mass a stands for resulting acceleration of the object. Newton’s Second Law Newton’s second law is stated in the Principia as follows: “The alteration of motion is ever proportional to the motive force impressed: and is made in the direction of the right line I which that force is impressed.” This law is used to find a numerical answer to how force affects an object. Kinetic Friction- attempts to slow down moving objects. Static Friction- attempts to keep something stationary. Friction- comes about when two objects rub against each other. Newtons First Law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force. Its direction is always perpendicular to the surface of the object. Isaac Newton put forth three laws of motion that explain how and why objects move. Force is defined by Newtons (N), such that (kilograms)(meters/second squared) Normal Force- the contact force that arises when two objects are impressed against each other. The force that gravity exerts still depends on the mass of the object. Force of Gravity- the force of gravity is the force that is responsible for accelerating objects at 9.8 meters/second squared near Earth’s surface. Newton’s First Law In his own words, Newton states: “Every body preserves in its state of being at rest, or of moving uniformly straight forward, except insofar as it is compelled to change its state by force impressed.” Force- an interaction between two objects that may or may not affect the subsequent motion of either object. He came up with the universal laws in the book titled Philosophiae Naturalis Principia Mathematica (“Mathematical Principles of Natural Philosophy”) Newton’s Laws Sir Isaac Newton was the first to formulate ideas about how to describe the causes of motion.

Newton laws of motion ppt