Projectile Motion Lab Report

DiscussionTrajectoryThe initial velocity of a projectile can be obtained by firing a ball horizontally and allowing it to fall freely to the ground.  The velocity can then be found using equation one for the vertical motion and equation four for the horizontal motion.  The initial velocity can be calculated by knowing, the time it takes for the ball to fall is the same time it takes to travel horizontally from the starting position until the ball hits the floor.  The end of the flight is dependent on the vertical motion.  Gravitational force, which is vertical, causes the projectile to come to rest at some point.  It is this action, which ends the time of flight.Starting with the vertical direction ,                                                      (1)Knowing the ball was shot horizontally,  must equal zero and using the floor as lowest possible point,  is also equal to zero.  This yields:.                                                               (2)Solving for :.                                                                 (3)Looking at the horizontal direction,                                                      (4)where:When the initial velocity can be found using:.                                                         (5)Because the ball is fired horizontally, the initial velocity, in the horizontal direction, is equal to the initial velocity   Note, this would not be true, if the ball was fired at an angle above or below the horizontal.  It should also be noted for problems with small horizontal and vertical dimensions, it is not necessary to consider air resistance.  Therefore, the ball, that is shot, will not have a change in the horizontal velocity component until it hits the floor.Ballistic PendulumThe ballistic pendulum uses a ball that is fired from a spring-loaded gun into the bob of the ballistic pendulum, which rises to a final position.  The initial velocity, of the ball is determined in terms of the mass of the ball, mass of the pendulum and the height to which the pendulum rises after impact.  The momentum  of a body is defined as the product of the mass  and its velocity :                                                        (6)The principle of conservation of momentum follows directly from Newton?s laws of motion.  According to this principle, if there are no external forces acting on a system containing several bodies, the momentum of the system remains constant.  In this experiment, the principle is applied to the case of a collision using a ballistic pendulum.  In a collision between the ball and the pendulum, each one exerts a force on the other.  These forces are equal and opposite, and if no other forces are brought into play, the total momentum of the system before the collision  is equal to the total momentum after the collision :.                                                        (7)The initial momentum comes from the mass of the ball  and its initial velocity .  The final momentum is found by velocity of the pendulum and ball  and their combined masses  as shown below:.                                                  (8)Solving for the initial velocity of the ball:.                                                           (9)In order to solve the equation above, the velocity of the pendulum and ball  must be found.  Initially, the pendulum is set at rest.  The ball strikes the pendulum bob horizontally and remains stuck in it.  The impact of the ball puts the pendulum in motion, causing it to swing upward, where it comes to rest some vertical height above the starting position .  The collision between the ball and the pendulum is totally inelastic.  Hence, immediately after the collision, ball and pendulum move horizontally with the same velocity.  An object in motion has energy of motion called kinetic energy .  This is the energy an object possesses due to the objects motion and is represented by:               .                                                      (10)After the collision is over, during the subsequent swinging motion, of the pendulum, the total mechanical energy is conserved.  The kinetic energy, of the system, just after the collision, must equal the increase in potential energy, of the system, as the pendulum and ball reach the highest point.  The potential energy ) is the amount of stored energy, or latent gravitational work represented by:.                                                           (11)This follows from the law of conservation of energy where energy initial  equals energy final , assuming the loss of energy due to friction at the point of support is negligible:.                                                                    (12)At the bottom, of the swing, the energy is all kinetic and at the top, of the swing, it is all potential.  Hence, conservation of energy shows:                                         (13)Solving for the velocity :.                                                             (14)DirectionsTrajectorySet the ballistic pendulum apparatus near one end of a level table and move the pendulum out of the way, so it will not interfere with the flight of the ball.Get the gun ready for firing, by placing the ball on the end of the firing rod and pushing it back, compressing the spring until the trigger is engaged. Fire the ball toward a cardboard box and observe the approximate location where the ball hits the ground.  Then, place a plain white sheet of paper on the floor and secure it in place with tape.Place a piece of carbon paper on top of the white sheet, so when the ball strikes the carbon paper it will leave a mark on the white paper.Fire the apparatus 6-8 times making sure it hits the paper each time.Measure the range of each shot and determine the average distance.  This is the horizontal distance the ball traveled.Measure the vertical fall of the ball, that is, the vertical distance of the point of projection above the floor.Ballistic PendulumRelease the pendulum from the rack and allow it to hang freely.  When the pendulum is at rest, pull the trigger, thereby firing the ball into the pendulum bob.  This will cause the pendulum, with the ball inside it, to swing up along the rack, where it will be caught at its highest point.Measure the vertical distance from the base of the apparatus to the index point attached to the pendulum.  This index point indicates the height, of the center of gravity, of the pendulum and ball.  Measure to the nearest 0.1 millimeters.Repeat step 2, five to six times and find the average height.Determine the initial height of the index point attached to the pendulum.Calculate the average change in height of the pendulum and ball.Find the mass of the ball and the mass of the pendulum.Calculate the ball and pendulum velocity.Calculate the initial velocity of the ball.Calculate the percent difference between the trajectory data and the ballistic pendulum data.Projectile Motion ResultsTrajectory Data:Change in Height                                ____________________(m)Mass of the Ball                                 ____________________(kg)Mass of the Pendulum                   ____________________(kg)Pendulum and Ball Velocity            ____________________(m/s)Initial Velocity of the Ball                 ____________________(m/s)Compare the initial velocity obtained by the two methods:           % Difference                                                ____________________

Service learning project | Education homework help

ÿ~ One of the benefits of teaching for social justice is that teachers and their students can get involved in service-learning as a way to learn the curriculum while also addressing real-life problems that face local communities. Extending learning beyond the classroom can lead to increased retention and allows students to practice their critical thinking skills.ÿ
~research other service-learning opportunities for K-12 students that promote cultural knowledge and the principles of social justice.ÿ
~submit a list of five potential service-learning projects for K-12 students.ÿ
I have a template attached.

Social Environment Analysis

In one or two sentences, what is the main idea of the text?Identify at least three points the author makes to explain or expand the main idea.What are some other significant ideas presented in addition to the main idea?Give your overall impression of this text. Is it effective, useful, confusing, informative, etc.? explain why you are characterizing the article as you are. Point to specific features or details to validate your impression.

Week 5 ia virtual poster conference

Poster presentations at conferences are effective methods of communicating research findings. The discussion of the research being presented is a key element in poster conferences. During professional conferences, poster presenters speak with other psychology professionals providing insights into the information offered within the poster as well as explaining key elements of the research findings. See the PSY699 Poster submission guidelinesLinks to an external site. for templates and guidelines to aid in the creation of your poster.
For this week?s discussion, you will be submitting a link to your Folio account where your colleagues will find your poster presentation along with a brief detailed explanation of the materials included in it. Poster presentations are typically informal affairs with limited time for presenters to provide extra information. In keeping with this, your explanations of the materials will be limited to specific parameters. To explain the research presented in your poster, you will be creating a 3- to 5-minute screencast video. You may use any screencast software to create this video. (For further assistance with specific free-use screencast software please see the Quick-Start Guide for Screencast-O-MaticLinks to an external site.) Within the screencast video, you will create a voice over that will point out unusual, unique, and important aspects of the research presented in the poster. Be certain to visually indicate the specific sections or headers where the elements are located to guide your viewers through the materials. The link to the screencast will be attached to the poster page within your Folio project so that your colleagues may interact with your insights into the materials.
Include the link to your Folio project with your completed poster and screencast link in your initial post prior to Day 3.
Note to Students: This assignment requires that you produce a visual presentation, supply a spoken audio narrative, and to listen the audio narrative of others.ÿ Note you are also asked to provide a transcript of your presentation.ÿ If you have a documented disability accommodation that might interfere with your ability to complete this assignment you may contact your instructor to develop a comparable alternative assignment.ÿ

RWS 305W SDSU Ethical Dilemmas Discussion

Each week/module, we will respond to the prompt in 250-words or more. We will use this activity for peer review and discussion with a few of our class mates. This process has two steps (1. Post 2. Respond). 1. You post your work before 11:30 pm Thursday evening. Your group mates will do the same. Then you write a thoughtful, 100-word or more response to each of your group mates’ posts. This response is due before 11:30 pm Sunday evening. You are welcome to strike up a conversation. We are here to help each other improve our writing. Suggestions and information are key. In that vein, compliments and vague statements will not count toward the 100-word response limit, as compliments alone will not help a group mate improve a piece of writing. Each Discussion assignment is worth 10 points total. Partial points may be awarded to partial efforts. Students must respond to their group mates to receive any points. And because this is a conversation that happens in time and place the due dates will be monitored and enforced. Prompt: Please craft your conclusion as a discussion on the consequences of your determination at the end of the analysis paragraph. This may be a strategy moving forward. This may be a set of mitigations. This may be a road map. This may be a reconsideration. Consider the set of steps below:–Discuss the consequences of the answer to your central question.–Build a strategy of actionable items that you intend to see through to success.–Address how you might negotiate the major issues affecting that industry.–Forecast how you see your potential career unfolding. Give details.–Mention some of the benefits not just to you, but others as well.Responders: This move described above is not a summary, but an exploration into and a strategy for the future. So it is uniquely personal and no two conclusions will be the same. But you can still let your group mates know whether or not the reader can follow along with their journey, whether the writing and thinking is clear, and whether or not the writing meets the prompt.

Fm unit v | Management homework help

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Instructions
Research Paper: Part II
In Unit II, you began working on your research paper that will be due in Unit VII of this course. In this unit, you will continue researching the company that you selected for your paper. For this assignment, evaluate the following items in relation to your chosen company:

Which stock market exchange is the company listed on?
Look at the past three years? worth of stock activity for your company.

What is the average stock price during that period?
What was the high/low price?

Has the company ever initiated a stock split?
How many shares of stock are outstanding? Authorized? Issued?
Would you invest in this company based on what you have evaluated? Why, or why not?
Compare this company?s stock to another company within the same industry. How does the stock compare in terms of price and activity? Explain.

SC Skill reflection Essay

DirectionsFull CreditThis is an essay with very few typos. Maybe one or two words are misspelled. It may have a couple commonly made grammatical errors, but it cannot be sloppy writing. This is collegiate writing.20 to >5 ptsPartial CreditThis essay has a typo, grammatical error and/or misspelled word in nearly every sentence and paragraph. There are obvious errors that could have been caught and corrected if the paper had been carefully proofread.5 to >0 ptsNo CreditThere are several typos, run-on sentences, and misspelled words throughout essay. This essay has careless mistakes such as using lower case i’s, writing “u” instead of “you”, abbreviating words, and other short cuts commonly used in texting./ 25 ptsEverything Includedview longer description25 to >22.5 ptsFull CreditThis essay fully addresses the writing prompt(s). It expands on the prompts and uses detailed writing.22.5 to >3.13 ptsPartial CreditEssay has some interesting insights and personal examples, but does not entirely address the writing prompt and/or is missing some required elements.3.13 to >0 ptsNo CreditDoes not meet needs of the assignment. It may be interesting and well written, but it does not answer the writing prompt. It may appear to have not been written for this assignment./ 25 ptsCourse Materialview longer description50 to >41.66 ptsFull MarksThis essay correctly applies course material to your everyday life. It incorporates course concepts and terms throughout. The writing is detailed, insightful, and provides examples unique to your own life. It is written about present day examples.41.66 to >4.16 ptsPartial CreditThis essay addresses all the prompts briefly. It incorporates a few course concepts and terms. It provides more general examples versus examples unique to your own life. It lacks insights and the ability to demonstrate that you understand the course material.4.16 to >0 ptsNo CreditThis essay fails to meet the needs of the assignment. It does not sound like it was written by a student in a communication course. It does not include course concepts or terms. It may be written about examples that happened before this class started versus writing about current day examples based on the communication strategies we have been learning./ 50 pts

A Firm in The United States Ross Stores Marketing Plan

 Marketing Plan From the real international market, select a company of your choice wishing to start its activities in Saudi Arabia. The Company hired you as Marketing Manager of Saudi ArabianRegion.You have to establish a marketing department starting from the Analysis of the market, formulate overall marketing goals, objectives, strategies, and tactics within the context of an organization’s business, mission, and goals designing and planning the entire function.Write a Marketing Plan considering the following points (2×5=10 Marks)1. Introduction, Goals and ObjectivesTo introduce this section you should include the “mission statement” of the business; an idea of what its goals are for customers, clients, employees and the consumer.a. Introduction about the business.b. Business vision and missionc. Business objective.d. Products and services offered2. Environmental Analysis Conduct an environmental analysis that looks at and comments on your local area and your network of business contacts, competitors and customers. 3. Target Market AnalysisIdentify the target market, describing how the company will meet the needs of the consumer better than the competition does. 4. SWOT Analysis Conduct a SWOT analysis for your chosen company based on your research.Strengths: List the strengths of the business approach;  Weaknesses: Describe the areas of weakness in the company’s operations;Opportunities: Examine factors that may improve the business’s chances of success;Threats: List the external threats to the business’ success.5. Marketing Mix (4 P?s ) AnalysisDescribe each of the 4Ps of your chosen company.Product or Service Identify the product or service by what it is, who will buy it, how much they will pay for it and how much it will cost for the company to produce it, why a consumer demand exists for your product, and where the product sits in comparison to similar products/services now available. PlaceIdentify the location of the business, why it is located there (strategic, competitive, economic objectives), the expected methods of distribution, and timing objectives. Promotion Describe the type of promotional methods that will be used. Identify techniques such as word of mouth, personal selling, direct marketing, sales promotion etc. television, radio, social media and newspaper ads. Price The prices of the products or services that reflects the overall company strategy. Should be competitive as well as a reflection of the quality, costs and profit margin.