My Project on Physics is about the projectile motion and firing, and how you can fire an object/projectile while in motion and still hit the target. This in turn influenced the Government, society and relationships between countries. On this page I will post my SS connection showing how Newton's Three Laws of Motion contributed to the creation of long range missiles and stuff like that.
This all started when Isaac Newton discovered/created the Three Laws of Motion. When Newton first wrote down the First Law of Motion he said, “An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.” Stating that any object will do whatever it is doing, unless something changes and it either stops or starts moving (depending on what it was doing before the change). Projectiles have been used since the human race could remember. The amount of things we can relate to when talking about projectiles is very extensive. For starters, their is the trebuchet machines used to capture cities, arrows shot from bows, spears thrown by men, and rocks launched by sling-shots. All of these are examples of projectiles used during the earlier ages.
During World War 2 when planes where barely beginning to become a thing, bombs where already created. So when they fitted airplanes with guns, bombs were also integrated and these bombs were supposed to be calculated to land on their target. Meaning projectile motion was used to calculate at what time and at how fast were these airplanes supposed to be going to hit their intended target. When World War 2 was ending and project Manhattan was reaching it's ending point the atomic bomb was created. There was not enough technology to put a targeting system on the missile so all they had was physics, gravity, and parabolas. Sure enough when Hiroshima and Nagasaki were bombed both cities went up in flames as those bombs landed on their intended targets. It might also have to do with the napalm bomb, but hey they landed.
Then came August 31, 1998, when North Korea tested what is known as the Taep’o-dong space launch vehicle; flying a ballistic trajectory. The space launch vehicle is supposed to launch a ballistic trajectory from space, and as you know when you're close enough to Earth you circle around it and its moving when someone fires that missile. This test put the United States in a state of semi-terror, because they could be attacked from anywhere. This made everybody uneasy for it could mean nuclear attacks from anywhere on the planet or space. This created some intense economic boom, because now the U.S. needed to invest in aerial defense weapons. This might have created jobs for the society; the policy part might have created some more issues because these jobs were very hazardous, they worked with radioactive elements that can cause death among other discomforts. During the Cold War, the first artificial satellite orbiting Earth. The Soviet Union launched on the 4th of October, 1957, igniting the Cold War conflict between the US and the Soviet Union. This was an incite on the first technological advancement on projectiles and projectile motion, it involves projectile motion and many other things to stay orbiting the Earth. This was the first installment of projectiles used by the human race to their advantage, later there was planes and maybe in the future flying cars. All these things that I have talked to you about the trebuchets, bows and arrows, space shuttles, planes and Newton. All these things created jobs and were used for either war or an advancement for the human race.
Ballistic Car and History
The project that I'm doing involves the propulsion of a vehicle horizontally, and the launching of a ball from a tube that is attached to the vehicle. The main point of this project is to show that when an object is in motion, an object being expelled from the moving vehicle will have not disrupt the motion of the vehicle. Following the same concept, the mortar is a type of ballistic missile that was used in World War II that was developed by German scientists and that is still used today. The V-2 was a short range ballistic missile that was developed during WW II specifically targeted at London and later Antwerp During the aftermath of WW II the American, Soviet, and British governments all gained access to the V-2's technical designs as well as the actual scientists responsible for creating the rockets. The below picture demonstrates how a mortar can be used to a attack a city, like the ones attacked during World War II. This page demonstrates how physics was used in history to produce the best results.
Cited Work Page
Bermudez, Joseph S., Jr. A History of Ballistic Missile Development in the DPRK. Monterey, California 93940 USA: The Center for Nonproliferation Studies, 1999. PDF.
Henderson, Tom."What Is a Projectile?" What Is a Projectile? National Science Foundation, Autumn 1996. Web. 29 Nov. 2014.
Henderson, Tom. "Newton's First Law." Newton's First Law. National Science Foundation, Autumn 1996. Web. 29 Nov. 2014.