Newtons three laws of motion

Newton’s Three Laws of Motion Sir Isaac Newton first introduced his three laws in 1686. Newton’s Three Laws of Motion not only improved math and science all over the world, but they played a major role in the development of human beings giving us a better understanding of the world in which we live and the laws that each and every one of us follow. Newton’s first law is law of inertia, which is a restatement of Galileo’s idea, an object in rest stays in rest or an object in motion stays in motion unless acted upon by an outside force. Newton’s second law states acceleration is proportional to the magnitude of the net force, is in the same direction, and is inversely proportional to the mass of the object. Newton’s third law, action and reaction, states for every action there is an equal and opposite reaction. The first of Newton’s three laws is the law of Inertia. The law of inertia is, every object continues in a state of rest, or of motion in a straight line at a constant speed, unless it is compelled to change that state by forces exerted upon it. In short an object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force. There are two types of motion; natural motion and violent motion. Natural motion is either straight up or down. Violent motion is imposed motion, result forces that pushed or pulled. This law relates to Copernicus’s theory that the Earth moves. Mass is a measure of inertia, it measures the response an object exhibits in response to any effort made to start it, stop it, or change its state of motion. The object keeps on doing what it is doing, not only will it remain the same but it will maintain the same speed and direction as well. One example of the law of inertia is the cloth table trick. The glass and silverware are in a state of rest and when you pull the table cloth out from under them they remain in a state of rest. Another is if a person were to roll a boulder off of a cliff the boulder would remain in a constant state of motion with the same speed and direction until acted upon by an outside force. This law applies to any object on Earth living or not. Newton’s second law mainly consists of force and acceleration, the acceleration produced by a net force on an object is directly proportional to the magnitude of the net force, is in the same direction of the net force, and is inversely proportional to the mass of the object. This law in equation form is, acceleration is equal to the net force divided by mass, or F=MA. Newton equated force to the differential change in momentum per unit of time. Momentum being a characteristic of a moving body determined by the product of the body’s mass and velocity. Objects at equilibrium will not accelerate. The second law says the acceleration of an object depends on two factors the net force acting on the object and the mass of the object. The direction of the net force is the same as the direction of the acceleration so if you know the direction of the acceleration the direction of the net force is also known. Newton was very successful in creating his laws except there was a problem, the math in the formula required him to multiply (kg) and (m/s) then having to write (kg)(m/s). So as an easy solution they used a Newton as the unit of force. Newton’s third law of motion is based mostly on action and reaction forces, whenever an object exerts a force on a second object, the second object exerts an equal and opposite force on the first object. The summarized version is, for every action there is an equal and opposite reaction. One force is the action force and the second force is the reaction force. In every interaction the forces occur in pairs but neither force exists without the other. Some forces result from contact interactions such as; normal, frictional, tensional. Other forces result from action at-a-distance interactions like gravitational, electrical, and magnetic forces. The size of the force on the first object is equal to the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. A few examples of this are a table and a book, the book puts force on the table but the table puts an equal and opposite force on the book. Think about a bird, the bird pushes the air downwards with its wings and the air pushes the bird upward. When someone sits in a chair they put force on the chair, the reason the person is able to stay up and not fall is because the chair is exerting an equal and opposite force. Sir Isaac Newton’s laws of motion helped give people a better understanding of how things work. The three laws have been used by scientists in more ways than some might think. They were used to not only to understand car crashes but to improve car safety saving millions of lives all over the world. Newton’s three laws were also used to improve transportation in other ways. Without the laws of motion the airplane would never have worked setting American transportation back by years. These are only a few of the ways that Newton’s three laws have improved the modern world. Isaac Newton and his discoveries paved the way of American education and transportation also helping spread technology to places in great need of it. In conclusion Newton’s three laws helped shape the development of human intelligence improving math and science everywhere expanding the possibilities of new knowledge on earth since 1686.