# Sir Isaac Newton Essay

960 Words4 Pages
Sir Isaac Newton and his Laws Sir Isaac Newton was born in Woolsthorpe, Lincolnshire, England on January 4th, 1643. His father died three months before he was born. His mom remarried after his father died and went to live with her new husband, so Newton was taken care of by his grandmother. He was enrolled in the King’s School in Gratham, England, but his mother pulled him out of school to make him a farmer like his first father. Newton was terrible at farming, so his mother returned him to the King’s School. He went to Cambridge University in 1661, and found that he was very interested in physics, astronomy, and mathematics, and so he became a scholar. But in 1665, Cambridge University was shut down because of the Great Plague. In the next two years, he began to get a hint about gravity, and he used all his spare time to learn about optics (light and color), science and mathematics. Newton discovered the three laws of motion in 1666, but he finalized it officially in his book, “Philosophiae Naturalis Principia Mathematica”, meaning “Mathematical Principles of Natural Philosophy" in Latin. How did he discover the three laws? Newton started studying gravity and motion after he watched an apple fall to the ground from a tree. The first law is also known as the law of inertia. This law states that an object at rest stays at rest and an object in motion stays in motion with the same speed in the same direction unless acted upon by an unbalanced force. An unbalanced force is when there are one or more forces acting upon an object that causes it to move. An example of an unbalanced force: If a heavy boat was sailing in the sea, then the gravity would add to it and cause it to sink, therefore overpowering the water pushing the boat up. A balanced force, or an equal force, is just the opposite of an unbalanced force: when two equal forces are applied on an object