essential. The firearm used to commit the crime may not be at the scene, cartridge casings and expended projectiles may be at crime scene and provide information about the type of firearm used. When a firearm is retrieved by a suspect it can be identified by distinctive tool marks on the expended casings, and individuals bullets can be linked to the firearm. By identifying and analyzing the trajectory of a bullet you can reconstruct the events surrounding a shooting. (GSR) gunshot residue pattern is
many people may have shot a firearm of some sort, few of those people actually realize how much physics is involved with the shot. So what exactly is Ballistics? Ballistics is the science or study of the motion of projectiles and in the case of most firearms, these projectiles are the bullets. There are two things that affect the flight of a bullet once it has been shot out of the gun. These things are the drag of air on the bullet and the force of gravity acting upon the bullet. The force
wartime and surprisingly, physics. The very motion of a cannon ball is so similar to projectile motion that it isn’t too hard to figure out that there exists a connection between the two. Projectile Motion, which is a part of mechanics, is the motion of an object in a two-dimensional world. Since a cannon travels in these two dimensions, making a similar curve, they are a prime example used in applying concepts of projectile motion. To discover one of the greatest practical use of physics is to identify
increases, but so does the trajectory and height. All the math work, along with physics principles, aided in proving that math has a significant role in the game of softball. Although people know that math is included in softball, the degree of its inclusion is still a mystery to both the audience and players. As seen in the mathematics work and graphs above, an average throw of a regulation fast pitch softball is parabolic in shape. This parabola has a curvature known as the trajectory, or the bath of the
In science class, our teacher has told us to do a research paper about the physics of projectiles involved in catapults. In an article about the physics of projectiles, I read that some models of catapults involve crossbars. Crossbars are bars that run horizontally between two vertical posts. I also read that if you control the length the arm can move it impacts when the projectile is unleashed and therefore the launch angle. A catapult depends on torque? And I found out that torque means the moment
stored potential energy of the counterweight can be converted into kinetic energy of the projectile, launching it into the air. Having the counterweight pivot around a much shorter distance than the projectile end gives an advantage to the projectile end of the beam to reach a much higher linear velocity than the counterweight end of the beam. This is the principle mechanical advantage that allows the projectile to have a high launch velocity. The main goal is to maximize the ratio of the length of
is an electrically powered electromagnetic projectile launcher composed of a pair of parallel conducting rails, along which a sliding armature is accelerated by the electromagnetic effects of a current flowing down one rail, into the armature and then back along the other rail. The rail gun was created in 1918 by a French inventor, Louis Octave Fauchon-Villeplee. His original design consisted of two parallel busbars connected by the wings of a projectile, and surrounding the whole apparatus with a
In this term paper, I will be relating projectile motion to personal experiences, movies, TV show, and Previous knowledge. In the first Unit of class we talked about motion in one dimension, but in this unit we talked about motion two dimensional. One example of a two dimensional motion is projectile motion. Projectile motion is when an object has an initial force that is applied to it to begin its motion. After the object starts its motion there is no longer a force that is being applied. At this
system, the need to achieve maximum accuracy and distance from a projectile has been critical to the survival of the human race. There are numerous of ways to solve the problem ranging from trial and error—as early man did—to advanced mathematics including trigonometry and calculus. (While the specific mathematical operations are beyond the scope of this work, we will briefly touch on the equations of motion and how they apply to projectile motion as the project progresses.) Many activities associated
Examining Projectile Motion Introduction When I was younger, I’d always worry about not being able to reach an object or be able to score a goal in sports. Especially because of my short height, I’d have to find creative ways in order to achieve these things. Projectile motion is just a fancy way of describing the efforts I had to go through in order to throw a basketball into the hoop at a certain height, or hit a golf ball at a certain angle in order to aim it. Projectile motion is used in our
“Terminal ballistics is in many cases, the least considered aspect of ballistics when determining the kind of bullet to use for a specific purpose…terminal ballistics is the study of how a projectile behaves when it hits its target and transfers its kinetic energy to the target. The bullet’s design, as well as its impact velocity, plays a huge role in how the energy is transferred” (Hornady). There are two ways that bullets can cause damage
to launch a projectile (Trebuchet). In this research paper I intend to explain the history and dynamics of a trebuchet catapult. History: The word trebuchet comes from the French word that means “to tumble” or “to fall over,” which is precisely what the trebuchet aims to do (Farrell, 2006). The trebuchet catapult first began appearing in the 6th century (“How to Build”, 2012). However, these early trebuchets were powered by humans pulling on ropes in order to lunch a projectile. What we would
Daniel Mattos 11/12/15 PD 5 A catapult is a ballistic device that is uses to throw projectiles over a great distance. Although the catapult has been used since ancient times, it has proven to be one of the most effective mechanisms during warfare. The word 'catapult' comes from the Latin 'catapulta'. Castles and fortified walled cities were common during this period – and catapults were used as a key siege weapon against them. As well as attempting to breach the walls, flammable missiles
terminal. Internal ballistics is the study of the flight of a projectile inside a firearm. External ballistics is the study of the flight of a bullet after leaving the muzzle and until it hits the target. Terminal ballistics is the study of the effects of a projectile on a given target. Because this essay deals with the flight of the bullet, terminal ballistics will not be discussed. Internal ballistics is the study of the flight of a projectile inside the firearm. The main components of internal ballistics
In the case of a bullet, spin increases accuracy, ensuring that the trajectory will follow an expected path. But sometimes spin can be used in more complex ways, as with a curveball thrown by a baseball pitcher. The invention of the curveball is credited to Arthur "Candy" Cummings, who as a pitcher for the Brooklyn Excelsiors at the age of 18 in 1867—an era when baseball was still very young—introduced a new throw he had spent several years perfecting. Snapping as he released the ball, he and the
of projection (Jenkinson 1996). First we will examine the primary factors involved with projectile motion in an ideal situation, where no air resistance is involved. These factors are: * Initial Velocity * Initial Height * Initial Angle * Gravitational Force These are the four primary factors. The initial velocity is the speed and direction of the object right as it begins its trajectory. The initial height may vary also. In the case of a baseb... ... middle of paper ... .
appropriate to shoot from. There are a lot of factors to keep in mind when doing this. Such as the velocity of your arrow, the optimal height you want, and the distance you want to cover. In my exploration, I wanted to see how the different aspects of projectile motion would affect the compound bow and the conve... ... middle of paper ... ...arrow to reach optimal height and back down. Once I got the value of the gravity, I found that it would be helpful in figuring out the time (t) that it takes the
study of the dynamics of projectile and bullet trajectory. Crime members utilize equipment that will allow to match individual characteristics to a known object in order to make a comparison. Just like the Locards exchange principle “when two objects come in contact, evidence is always left behind”. When a weapon has been shot, the barrel of the gun will leave marks on the bullet. With the marks left behind, one can scientifically prove the kind of weapon used, trajectory and estimate the distance
Projectile motion: mathematics SL IA Dhruv Chavan Rationale: This idea was chosen due to my background in sports. I have played basketball for the past 6 years 2 of which have been in Raha. Basketball is a sport which involves many aspects of mathematics, the main one being trigonometry. I have found that many times during the game I am required to shoot the ball from distances that exceed the three-point line and therefore require more power in order for the ball to reach the rim. In most games
golf green, could measure a soccer field's coefficient of friction by rolling a small ball on grass and measuring the distance it travels before stopping. Projectile Motion When projectile motion is treated in basic physics courses, the influence of air resistance is often neglected in the calculations and the trajectory of a projectile becomes a parabola where the horizontal velocity component is contant and the vertical component is subject to gravity. However, for someone watching a game