Laura Cortez
Science Per. D
11/28/12
Soccer Ball Lab

I. INTRODUCTION
Speed, distance, time, and acceleration are all very complex formulas that are interdependent. These formulas are measured in motion data and used to determine the final instantaneous speed, distance, time, and acceleration. Distance and time are two formulas that are used to determine speed and time. For example, distance equals speed multiplied with time given, time equals distance divided by speed, and speed is equals distance divided time. Speed and time are required to determine acceleration. ( This is how they are an interdependent formula.) These complex formulas will benefit you in situations , where as you are trying to find the missing equation value dealing with motion data. For example, in many situations, the problem gives information with only the values of time and distance. You are trying to solve for the speed in the given problem, so in order to determine the speed, you’d have to taken the given information and divide the time by distance. In other situations, you are trying to solve for acceleration, which only initial velocity, time, and acceleration are given. You would have to interrelate the given values and take the initial velocity and add it to the acceleration, multiplied by time, then your data and equations sum up to the final velocity. These formulas and equations, in particular, acceleration and speed, are related to Newton’s first law of motion. This is also known as inertia, inertia is the resistance of any physical object to a change in its state of motion and rest, or the ability of an object to resist any change in its motion. Objects at rest will remain at rest if both acceleration and speed are equal to zero . Newton’s first law of motion states “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.” An unbalanced force is when 2 forces...

...From many decades ago soccer has always been a sport where anyone is welcome to play and watch from little kids to teenagers and to elders who have had love for the game since they've been toddlers. So we will go into depth of soccer to see how it started, how its played along with the regulations/rules of the game and talk about the players that have changed the game forever and have made it so popular.... First off the sport name wasn't always calledsoccer till it came to the United states, it was called football. It originated from many other sports such as Tsu-chu translated "kick Ball" a game that was played by the Chinese in 206-255BC and it started to be called soccer in the 16th century of Europe and England but very different to the game up to today. Football was slowing becoming a well know sport it started creating leagues, The first president of FIFA was Robert Guérin. The first tournament FIFA staged, was on the football competition for the 1908 Olympics in London despite the presence of professional footballers. So After the big deal of Football been played around the world and having leagues a set of rules and regulations were made.... these rules weren't made by FIFA, these rules were made by a college named Eton College that made the sport famous in colleges and in many schools and colleges these rules were called "Cambridge rules" There are some rules that might just save your life...

...Block 7/8
October 8th 2012
Electrostatic Gedanken Lab
Group Gamma
Objective: The objective of this lab is to determine the charge on a pith ball.
Hypothesis: I fully believe that the charge of the pith ball will be positive. The formula I will use to prove this is Coulomb’s Law, (Fe=(k*q1*q2) / r²). ‘Fe’ is equal to the electrostatic force between the spheres, measured in Newton’s. It is also a vector quantity, and it’s in absolute value. Secondly, ‘k’ is equal to Coulomb’s law constant. The constant is equal to 8.99 * 10^9 N*m²/C². Thirdly, ‘q1’ is equal to the charge in Coulomb’s (C) of the first object. As well, ‘q2’ is equal to the charge of the second object in Coulomb’s (C). Finally, ‘r²’ is equal to the radius between the two centres of the objects measured in metres, squared. The manipulated variable in this lab is the radius at which we place the metal sphere away from the pith ball. The responding variable is the electrostatic force of the pith ball as a result of the radius from the metal sphere. The controlled variable is the charge of the metal sphere, which is -3.59e-7C.
Equipment
1. Pith Ball
2. Metal Sphere: Has a charge of -3.59e-7C.
3. Spring Device: Measures force acting between the two spheres.
Procedure:
1. Make sure the pith ball is hanging insulated on the spring device, and that you have the metal sphere....

...
Moment of Inertia and Rotational Motion
Garret Hebert
PHY 2311
Tues 1:00
garret.hebert@hindscc.edu
Abstract:
During this lab we will study what rotational Inertia is and how different shapes of masses and different masses behave inertially when compared to each other. We will specifically study the differences of inertia between a disk and a ring. We will use increasing forces to induce angular acceleration of both a disk and a ring of a certain mass. We will then then measure the differences in the acceleration to determine how the ring and the disk resist rotational movement. Afterward we will compare how the radius of the masses and the torque(force) applied relate to the angular acceleration. We will achieve a predictable force by using g=gravity=9.8 for this acceleration.
Theory:
In this experiment we will measure the inertia of a disk and a ring by dividing an applied torque by the resulting acceleration. I=. Then we will calculate the theoretical inertia using the moment of inertia equations for a disk and a ring. Then we will compare the two values and determine a percent error.
Data and Analysis:
Discussion & Conclusion:
The law of inertia states that it is the tendency of an object to resist a change in motion. Copernicus and then Galileo were the first to dispute Aristotle's thought on movement and in doing so they developed the first thoughts on inertia. Galileo Galilei was the first state “A body moving on a level...

...
Centro de investigación y desarrollo de educación bilingüe (CIDEB)
Physics
LAB REPORT
Uniform Rectilinear Motion
Teacher: Patrick Morris
Alejandra Castillejos Longoria
Group: 205
ID: 1663878
Abstract
The purpose of this experiment, was to prove the concept of the uniform linear motion by using an air track. With this, we demonstrated the impulse and change in momentum, the conservation of energy and the linear motion. We basically learnt to calculate the distance/time, acceleration/time, and velocity/time and graph it. The air track is also used to study collisions, both elastic and inelastic. Since there is very little energy lost through friction it is easy to demonstrate how momentum is conserved before and after a collision. According to the result, the velocity of the object in the air track was constant, it means that it didn’t have acceleration because it has constant velocity.
Introduction
First of all; we should understand what is linear motion. Linear motion is motion along a straight line, and can therefore be described mathematically using only one spatial dimension. Uniform linear motion with constant velocity or zero acceleration. The Air Track can be used to obtain an accurate investigation of the laws of motion. A car or glider travels on a cushion of air provided which reduces friction. Since the friction is all but removed the car will be moving at a constant...

...Ball in the Cup LabBall in Cup Lab
Objective:
Using the equipment provided and the physics equations used in class, get the ball in the cup in one attempt.
Hypothesis:
If we use the skills we have learned to analyze two-dimensional motion, then we can accurately predict where a ball will land when rolled off a table.
Materials:
3 Meter Sticks
Tape
SteelBall
Balance
Plastic Cup
Protractor
Stopwatch
Plumb bob
Procedure:
Using two meter sticks and the tape, make a ramp for the steel ball to roll down. The ramp should extend from the top of the counter to the tabletop. Then roll the ball down the ramp and record the time it takes for the ball to roll off the ramp. Repeat this process to find the average time that will be used in the equations. Measure the height of the table from the floor. This will give you a distance in the y direction. You must also take into account the height of the cup so as to not hit the side of the cup when launching the ball. After collecting this data, plug it into the distance equation, making sure to separate the y and x components. In doing so you will obtain the position on the floor in which the ball should land. Also measure the diameter of the cup and place the center of it at the point you determine the...

...The Beautiful Game
Football has been the most popular sport in the world but everyone has different views and aspects about it. For my Textual Artifact Project, my goal is to aim for those lovers, players, and fans of sports and football. The audience that I intend to capture ranges from 13-60 years old due to the fact that being a fan has no age limit. These people will vary from race, ethnicity, religion, and gender having different ideas and beliefs about the world of football and how it is today. This gives me the opportunity to capture the attention to those future footballers about their interest of football being a job or for those fans that treat football as an opportunity of learning having fun. My intention is to create an atmosphere where my audience is able to speak their mind and learn new aspects of football. Of course everyone in my audience knows about the simple game of football by knowing the rules, but not everyone knows the history of football or how much it has changes throughout the years both financially and mentally.
My ideas for the artifact aren’t fully developed but one of them is using Prezi to show the evolution of football. Of how much it has changed, how much it has developed, and more importantly of how much it has been affecting the world today. It will allow me to show my audience that behind every goal, every trick, and every championship, there is history that allows that to happen.
I can guarantee that my audience will at...

...PHYSICS NYB-21E Winter 2012
Chapter 3: Electric potential energy and electric potential
´ ´ Instructor: Jeremie Vinet Marianopolis College.
– p.
Review
Important points from last lectures:
q A point charge q creates an electric ﬁeld E = ke 2 r ˆ r
A point charge q0 placed in an electric ﬁeld E feels a force Fe = q0 E
– p.
NYA ﬂashback: Work
When a net force acts on an object, it accelerates it. When an object accelerates, its velocity changes. When the speed of an object changes, its kinetic energy changes. When an object’s energy changes, work has been done on it.
– p.
NYA ﬂashback: Work
In less cartoonish terms, The amount of work W done by a force F over a displacement ∆r is
W = F · ∆r
The amount of work W done by a force F over two displacements ∆r1 and ∆r2 is
W = F · (∆r1 + ∆r2 )
Remember the deﬁnition of the dot product
A · B = |A||B| cos θ = Ax Bx + Ay By + Az Bz
– p.
NYA ﬂashback: Work: example
What is the work done by gravity on a watermelon dropped from the College’s roof to the parking lot below?
– p.
NYA ﬂashback: Work: example
The force acting on the melon as it falls is Fg = −mgˆ. The j displacement it undergoes is ∆r = −hˆ. We put these j together to ﬁnd that the work is Wg = Fg · ∆r = (−mgˆ · (−hˆ = mgh(ˆ · ˆ = mgh. So the j) j) j j) amount of work done by gravity on the melon of mass m as it dropped a distance h is mgh. (Remember, ˆ · ˆ = |ˆ ˆ cos θ = 1 × 1 × cos(0) = 1.) j j j||j|
– p.
NYA...

...
Soccer History
Soccer is one of the most popular sports in Europe and the Americas. It has a vivid and interesting history in the world of sports. Early evidence of soccer being played as a sport finds occurrence in China during the 2nd and 3rd centuries BC. In China, it was during the Han dynasty that people dribbled leather balls by kicking it into a small net. Recorded facts also support the fact that Romans and Greeks used to play ball for fun and frolic. Some facts point to Kyoto in Japan where kicking of ball was a popular sport.
It is said that early growth of the modern soccer started in England. Some amusing facts even mention that the first ball used was the head of some Danish brigand. It is said that during medieval times, the old form of soccer used to allow many ill practices like kicking, punching, biting and gouging. The main aim was to carry the ball to a target spot. People grew so fond of the game that they would throng the field all day long. Sometimes the competition grew fierce and masses got so wild that there were frequent incidents of violence during the game. It is also said that soldiers admired the game so much that they missed archery practice to watch it.
King Edward III banned soccer in 1365 owing to the growing incidents of violence and military indulgence in the sport. In 1424...