Newton’s Theory of Motion essay
Newton’s Theory of Motion
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Introduction
Newton’s laws of motion consist of physical requirements that found the beginning of classical mechanics by describing a correlation between a body and the forces. The laws of motion were discovered by an English scientist called Isaac Newton during the 17th century and early 18th century (Goren & Galili, 2019). The three laws of motion-defined the behavior of force, both qualitative and quantitative, and its impact when acted. The rules apply to all things that have mass regardless of the size and shape. The laws of motion helped the development of modern science by the invention of forces subjected to objects (Susskind, 2019). Therefore, we learn that Newton’s theory of motion explains the three principles of energy that apply to external forces. The SI unit of Force is Newton (N). The laws of motion are discussed below.
Newton’s First Law of Motion
Newton’s First law of motion tries to explain the relationship between force and the velocity of an object. The law is also referred to as the law of Inertia. It states that a body will still in its state of motion unless it is disturbed by other external forces that tend to change the movement. According to the explanation, it is easy to say that if objects are left in their original forms without being interrupted by any other variable like force, they will not change. Also, the law states that if the object is in a steady movement in a straight line, it will continue with that speed unless it is affected by an external force that may change its direction and increase its velocity (Hecht, 2017). Inertia is the resistance that is applied by an object to any forces trying to improve its speed. Velocity, mass, and direction are the most critical aspects of Inertia. The law states that if the object’s total force is zero at any point, it’s because the object is in rest, meaning that no movement or the object is in a steady motion, thus meaning no acceleration exalted. Velocity in Newton’s first law is a vector quantity since it explains the object’s speed and the direction at which the motion flows. Then, the mass of the object should be a non-zero unit for the law of Inertia to work well. The unit for velocity is meter per second (m/s) since it involves direction and speed.
Newton’s First Law has been used in many applications in real-life situations. We experience the law in every time of our living. When one is traveling through a bus and tries to throw an object upward, the purpose will drop back to the person regardless of the bus speed. It is because the object has Inertia as the train and retains it. In the past, the law of Inertia was applied to explain the fact that the earth is always in constant movement around the sun, yet people who live in it do not realize it. The answer is that we are in motion with the earth, so we tend to retain the earth’s movement so that it seems to us as at rest. The law of Inertia was applied as the significant development of classical mechanics and calculus, which helped solve many scientific problems and paved the way for other researchers.
In the present, the law of Inertia has been widely used following the rise of many advanced scientists. It is applied in motor vehicles by making sure that all seats ha seat belts. It has been noticed that when a car gets an accident, the people inside the car will be thrown outside at a very high-speed relative to the vehicle’s moving through Inertia. It is concerned, and know that accidents do happen, passengers may not get much harm since they have seatbelts. In the future, the law holds much responsibility to the lives of people and interrelation with other forces.
The law of Inertia has helped a lot in the modern environment by saving lives in the introduction of seatbelts in vehicles. The study of Inertia is relevant in understanding the force of friction applied in the calculation of plane speed in the air since it faces a strong effect of restriction by resistance. Newton’s first law has contributed to various studies and the development of other principles concerning force.
Newton’s Second Law of Motion
Newton’s second law of motion relates to the first law. It incorporates the features of mass and speed or acceleration. Acceleration is the change of velocity of an object with time. Its SI unit is meter per second squared (m/s2). The SI unit of mass is the kilogram (Kg). Therefore, Newton’s second law of motion, which is also called the law of acceleration, states that acceleration occurs when a force is exalted on an object, and in a certain direction, which makes the second law a quantitative one. Heavy objects require a lot of force to accelerate, but when the acceleration is finally gained, they move at a very high speed. The proportionate rate of change in force causes the same rate of change in the object’s acceleration, making it directly proportional (Lemmer, 2018). The formula for the calculation of the law of acceleration to find the net force (F) is given by the product of mass (Kg) and acceleration (m/s2). The SI unit is Kg.m/s2
Force, F= Mass, (Kg) * acceleration, (m/s2)
Therefore, F= m*a
In the past, Newton’s second law was used to determine the amount of force needed to fly a plane so that it can hold its mass and, at the same time, accelerate at high on air. The law of acceleration is also used in motor forklifts, which help determine the amount of force required to lift particular objects. Taking two objects of different masses, when the light object is pushed, and the same amount of energy is applied to the massive object, you notice that the light object accelerates fast since it has less mass. Therefore, it is easier to push light objects than heavy objects. When a cyclist applies force to the pedal, the bike speeds up; this is because the energy is used on the bicycle, which, in turn, is the mass carrying the cyclists. Newton’s second law has open many scientific research problems that need to be researched to make the work easier.
The study of Newton’s second law has been very relevant in the day to day activities since many fields depend on it. Even in playing football, a player is required to evaluate the ball’s speed so that it can be stopped; otherwise, the ball will bounce back at a very high velocity if one applies significant force. The law has contributed over time in both studies and life to explain different scientific disciplines and the relationship between mass and acceleration.
Newton’s Third Law of Motion
Newton’s third law of motion explains that all the forces found between two bodies are equal and opposite of each other and have magnitude (Tamir, 2017). It is also called the law of interactions since Isaac Newton tried to explain that all forces between bodies are interactive. The law states that the force of action (F1) of any object equals the force of Reaction (F2). The law has a vector quantity since there are the magnitude and direction of the army. The force of action and Reaction is simultaneous and acts at the same time. For example, when somebody is swimming, the force that helps people to propel forward is equal and opposite to the force applied by legs in pushing the water. A person jumping from a boat in the water to land on the riverbank, the boat is pushed backward, and the person jumps forward to the river bank. The force applied by the person is equal and opposite to the force exalted on the boat.
Formula; F1=-F2 (the F2 is in negative because the force is in the opposite direction)
Therefore, if F1= m1*a1 and F2=m2*a2 then, m1*a1= m2*a2
Newton’s third law has been used in the past in the development of space rockets. Before the rocket takes off, it burns a lot of fuel to gain energy, which is exalted on earth’s surface and, therefore, creating a reaction force that pushes the rocket to the sky with a very high speed (Natsiavas & Paraskevopoulos, 2016). At present, the law is used for application in recreational services through the formation of a trampoline. When a person jumps on the trampoline, it absorbs a downward force sending the person back on the air.
Newton’s third law is very significant to life through the provision of recreational centers where children may play. It is also applied in swimming to enable the swimmer to move forward by Reaction of water. The law allows for people to drive since, for every step a person moves forward, there is an equal and opposite force backward; that’s why when walking, people notice muscles contracting to exalt force.
References
Goren, E., & Galili, I. (2019, August). Newton’s Law-A Theory of motion or force?. In Journal of Physics: Conference Series (Vol. 1287, No. 1, p. 012061). IOP Publishing.
Susskind, L. (2019). Complexity and Newton’s Laws. arXiv preprint arXiv:1904.12819.
Lemmer, M. (2018). Applying the science of learning to the learning of science: Newton’s second law of motion. Africa Education Review, 15(1), 20-37.
Hecht, E. (2017). Kepler and the origins of pre-Newtonian mass. American Journal of Physics, 85(2), 115-123.
Tamir, A. (2017). Art and Science Newton’s Third Law: Action= Reaction. Biomedical Journal of Scientific & Technical Research, 1(2), 286-288.
Natsiavas, S., & Paraskevopoulos, E. (2016). Application of Newton’s law of motion to constrained mechanical systems possessing configuration manifolds with time-dependent geometric properties. Non