Why I Chose This Topic I decided to choose this topic because I enjoy learning about the different laws of physics and motion. Newton’s three laws of motion have fascinated me, so I decided to study them. I also wanted to learn more about why objects move and stay in motion.
Science Concept
Newton’s First Law of Motion:
Newton’s First Law states that an object at rest tends to stay at rest and an object in motion tends to stay in motion, with the same direction and speed. Isaac Newton explained in his book, “Principia,” that motion cannot change without an unbalanced force acting upon it. For example, if nothing happens to you, and nothing ever does happen, then you will not go anywhere. Similarly, if you are going in a specific direction, unless something happens to you, you will always go in that direction. A real-life example of Newton’s First Law in action is in space. When astronauts let go of their tools, they place them in space and they never move anywhere. The First Law is also true when they throw objects. The objects will continually travel at the same speed and not change direction until something stops it.
Newton’s Second Law of Motion:
Newton’s Second Law of Motion states that the acceleration of an object is dependent on the total force acting on the object and the mass of the object. Mathematically, the force (F), is equal to the mass (m), times the acceleration (a), which can be represented by the equation F=ma. The more force an object has, the greater the acceleration will be. The Second Law proves that if you exert the same amount of force on two objects with different masses, then you will also get different accelerations, or changes in motion.
Newton’s Third Law of Motion:
Newton’s Third Law of Motion states that for every action, there is an equal and opposite reaction. The Third Law proves that forces always come in pairs. For example, when you sit in a chair, you exert force upon the chair. For the chair to not break, it must exert an equal amount of force upon you. In other words, acting forces encounter other forces in the opposite direction. Another example is firing a cannonball out of a cannon. When the cannonball is fired through the air by an explosion, the cannon is pushed backwards by the force. The force pushing the cannonball out of the cannon was equal to the force pushing the cannon backward, but the effect would be less noticeable because the cannon is much heavier than the cannonball.
Application Newton’s Three Laws are found throughout our everyday lives. We use, and see the laws being used all the time, whether we realize it or not.
Newton’s First Law of Motion states that an object at rest tends to stay at rest, while an object in motion tends to stay in motion, with the same direction and speed. The principle of inertia is one of the basic principles in classical physics that is still used today to describe the motion of things and how it is affected by the forces applied to them. The term inertia may be referred to as “resistance to change in motion.” This includes changes in the speed of the object or the direction of motion. One aspect of this property is the tendency of things to continue to move in a straight line at a constant speed, when no forces are affecting them. In other words, this aspect is Newton’s First Law of Motion; therefore, the two are closely related. Inertia is the reason why an electric fan continues to move after the electricity has been powered off, or why you fall backward when a bus starts to move forward.
Newton’s Second Law of Motion states that the acceleration of an object is dependent on the total force acting on the object and the mass of the object. This relationship applies the principle of preserving momentum. This law also means that when two equal forces act on two different bodies, the object with greater mass will have less acceleration and slower motion, and the object with less mass has greater acceleration. For example, if there are two similar engines, one for a large car and the other for a small car, then the small one will have more acceleration because its mass is less and the large one will have less acceleration because its mass is greater. A real-life example of Newton’s Second Law is simply pushing on a ball to get it to start moving.
Newton’s Third Law of Motion states that for every action, there is an equal and opposite reaction. Engineers apply Newton’s Third Law when designing rockets; the rush of gasses from the rocket to the top when it ignites causes it to increase in speed. An example of Newton’s Third Law in our everyday lives would be when a person jumps into the air, their feet apply force to the ground, and the earth applies an equal and opposite reaction force that pushes you into the air.
In conclusion, Newton’s Three Laws of Motion are seen in everyday components of our lives. Careers in engineering and physics commonly use Newton’s Three Laws, and the mathematical principles involved are some of the most important in these fields of study.
Sir Isaac Newton developed the three laws of motion. He was born on January 4th, 1643, in England. He began to develop theories on light, calculus, and mechanics while at Cambridge University. In 1687, he published his groundbreaking book, “Principia,” which contained his laws of motion and gravity. Sir Isaac Newton served as president of the Royal Society of London until his death in 1727.
Career Path
Some careers that involve Newton’s Three Laws of Motion include physics, engineering, and many others. A physicist plans and conducts studies and experiments to test theories and discover properties of matter and energy. An engineer, on the other hand, uses mathematics and science to solve different technical problems. Both of these careers acknowledge Newton’s Three Laws of Motion as a basic principle that should be known in order to be successful in their field of study.