different types of sports balls bounce on different types of surfaces? AIM the aim of this experiment is to find out how the COR (coefficient of restitution) of 3 balls (tennis ball‚ snooker ball and ping pong ball). FORMULA USED FOR COR GPE (after) = KE (after) GPE (before) = KE (before) mxgxHr = ½ x mx Vout² mxgxHd ½ x m Vin² Hr = Vout² Hd Vin² APPARATUS meter stick‚ tennis ball‚ ping pong ball‚ snooker ball‚ surfaces; wood and carpet
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A hard rubber ball is dropped from rest. It falls to the concrete floor and bounces back up ALMOST to its initial height. A motion detector is mounted on the ceiling directly above the ball‚ facing down. So‚ the positive direction -- the away-from-the-detector direction -- is downward. Draw the position‚ velocity‚ and acceleration graphs. Since moving downward is a positive direction‚ is the velocity positive when the ball falls‚ 0 when it hits the ground‚ and then negative when it moves up?
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Question : Her First Ball Themes “Her First Ball” is a short story written by Katherine Mansfield’s‚ Mansfield’s mainly focuses with the shortness of happiness and joyful moments in human life. In this story‚ the protagonist is a young girl called Leila who with her cousins attends her first ball‚ a large formal ball with dancing. The main themes of this story are very dramatically described throughout the short story. The story tells us the idea of a girl’s first experience of a ball dance. Leila was
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Ball mill is advanced technologies and energy-saving‚which is not only high grinding capacity but also low energy consumption.what is the main advantage of ball mill?How to use ball mill ?Ball mill is suitable for grinding all kinds of ores and other materials‚ which is widely used in mineral dressing‚ building materials‚chemical and other industries‚ Ball mill can be divided into dry type ball mill and wet type ball mill. Ball mill is widely used in refractory plant‚ cement plant‚ glass plant
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The ball mill is a key equipment for grinding materials‚ widely used in powder-making production line such as cement‚ silicate sand‚ new-type building material‚ refractory material‚ fertilizer‚ ore dressing of ferrous metal and non-ferrous metal‚ glass ceramics‚ etc. Ball mill can grind various ores and materials with dry type or wet type. There are two kinds of ball mills‚ grate type and overfall type due to different ways of discharging material. Ball grinder mill Maintenance and Repair Cycle
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seriously affects the production efficiency of ball mill. Uneven ball mill’s discharging may be caused by the following two aspects: Firstly‚ the feeding grinding materials cause the uneven discharging. When water into the grinding material is high‚ it may cause the ball mill grinding "full" phenomenon. If the water into the grinding material is too much‚ you can reduce the feed rate of ball mill‚ dry grinding materials‚ strengthening ventilation in ball mill‚ and join the way such as grinding material
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and shooting a soccer ball. Whether you are a beginning soccer player or do not understand how to properly kick a soccer ball‚ this guide will teach you to basics to strengthen your skills while also maintaining safety. In just a couple of practice sessions‚ you will become aware of how much your skills in these areas have improved. By following these simple yet descriptive steps‚ you should be able to successfully master the ability to dribble‚ pass‚ and shoot a soccer ball effectively and safely
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2013 Wood – Public Speaking Tuesday 6:00 Three different World Cup official match balls General Purpose: To inform Specific Purpose: To inform my Speech 1315 class about three different World Cup official match balls. Organizational Pattern: Topical I. INTRODUCTION A. Attention Getter: Imagine sweaty people on the ground. There are many audiences. The players are focus on little ball. They are passionate. They are eager for win. Which sports can you imagine? I am thinking
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1. Critical Analysis of “Carlill Vs Carbolic Smoke Ball Case” 2. What role “Ad-Idem” plays in formation of a valid contract? CONTENTS TABLE OF CONTENTS 1. Introduction 1. What is there product? ……3 2. Promotion of Carbolic Smoke Ball ……3 3. The Case- Carlill Vs Carbolic Smoke Ball case ……4 2. Case Analysis 1. What is Contract? ……5 1. Offer ……5 2. Acceptance of the offer ……6 3. Constituted good
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If you’re looking for an affordable automatic ball launcher‚ you may want to take a closer look at the Pyle Automatic Dog Ball Launcher. This machine was specially designed for smaller dogs and it performs very well when it comes to launch the balls at a specific distance. Even though it may not come with as many advanced features as the other models‚ it’s still worth considering if you want to go with a cheaper option that won’t disappoint you. To make sure this unit is the right one for your needs
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