Dover has kindly sponsored this post but all opinions are my own. You have no used chemistry to make your own bouncing ball. Drop a ball from 50 cm and record how high it bounces. Repeat steps 3 and 4 but change the drop height to 1oocm, 10 cm and 200 cm 6. Numeric example in my experiment, the ball was dropped from a height of 6 feet and begins bouncing. Be sure to perform 3 trials, and allow time for team members to record the data. The result will be an egg that feel rubbery like a bouncy ball and does bounce. The first independent variable that will be tested. Meter stick ping pong ball timer computer the purpose of this lab is to. This experiment is as old as the hills maybe even older. Several aspects of a bouncing balls behaviour serve as an introduction to mechanics in high school or undergraduate level physics courses. Bouncing ball experiment pacific lutheran university. The physics of a bouncing ball concerns the physical behaviour of bouncing balls, particularly its motion before, during, and after impact against the surface of another body. Here, the experiments measure the time evolution of the wave function of a quantum bouncing ball.
The height to which the ball bounces is to be estimated as carefully as possible. Introduction balls have been toys practically forever, but the bouncing ball is a more recent innovation. The bouncing ball experiment is a precision electromechanical instrument for investigating nonlinear dynamics. The telefunken design was aimed for existed general purpose analog computers. Chemistry of bouncing balls how to make them in lab. Learning objectives state what a hypothesis is, describe the three variables, explain how you plan an experiment.
While balls have been used as toys forever, the bouncing ball is a more recent innovation. If you would like a detailed view of what happens, you can use a camera to film the experiment. For trial 1, hold the ball at a height of 40 cm, drop the ball carefully and observe the bounce height. If there is disagreement about where to place the balls on the chart, redo the experiment to see which ball bounces the highest. The ground will then apply this same force to the ball, which causes the ball to bounce back up. Once you understand the basic technique you can alter the recipe for the ball to see how the chemical composition affects the bounciness of the ball, as well as the characteristics.
Drop a ball from 1 foot off of the floor, slightly in front of a yardstick. How to make ice cream in a bag to get the scoop on how to do this activity, first download the recipe and then visit more than a worksheet where sara shares tips and ideas to make it easy. Ball bounce lab investigating kinetic and potential energy. In a laboratory activity students study the behaviour of a bouncing ball. Pdf of the energy of the ball during a flight between two collisions. You can use chemistry to make your own bouncing ball. When a ball is dropped to the ground, one of four things may happen.
Five different kinds of balls, all of which bounce pretty well. A big heavy ball like a football a small light ball like a mini foam ball, or tennis. Your findings might be different than those shown in the chart. What, if any, of your observations are indicative that a polymer was forming formed. Form a students were given a ball and needed to find a relationship between the balls drop height and initial bounce height. The first time you drop the ball do not take a measurement, just watch where the ball goes so the next time the observer knows where to look.
Striking results with bouncing balls andre heck, ton ellermeijer, ewa k edzierska abstract in a laboratory activity students study the behaviour of a bouncing ball. Bouncing ball physics is an interesting subject of analysis, demonstrating several interesting dynamics principles related to acceleration, momentum, and energy. Hypothesis independent, dependent, and controlled variables if we decrease the height of the drop of the ball, then the number of bounces will increase, because as the height decreases, the ball will reach the ground faster and faster every time because the height of the drop is. This bouncing ball experiment lesson plan is suitable for 8th 12th grade. For a bouncing ball, the action is a ball falling against the ground with a force that is determined by the mass of the ball and the height from which it fell.
This is just a sample of how to record your results. A well designed experiment will have only one independent variable. Pdf the bounce of a ball is a seemingly innocuous event that can be used to illustrate many aspects of elementary and even advanced mechanics. Few independent variables will be changed, so the investigation is easy to manage, and the data is easier to process. The experiment will investigate the bounce efficiency of a tennis ball when dropped from different heights. Bouncing ball problem and geometric series a motivating example for module 3 project description this project demonstrates the following concepts in integral calculus.
Bouncing ball investigation bouncing ball investigation this is an experiment to investigate bouncing balls and how they behave in different situations. An elastic ball bounces on the piston and exhibits a surprisingly wide range of dynamic behaviors. Balls have been toys for practically forever, but the bouncing ball is more recent of an innovation. However, the exact modelling of the behaviour is complex and of. At the end of the experiment, everyone should use their calculators and figure the average bounce height for each ball in the experiment. Modeling a bouncing ball you are to drop a bouncy ball onto a hard, level floor and explore the relationship between the maximum height of the bounce and how many times it has bounced. This help to greatly increase the accuracy of the experiment. Students drop a ball from different heights and measure the corresponding bounce. A hybrid dynamic system is a system that involves both continuous dynamics, as well as, discrete transitions where the system dynamics can change and the state values can jump. Bouncing balls were originally made of natural rubber, though they are now made of plastics and other polymers and even treated leather. At the end ofthe experiment, everyone should use their calculators and figure the average bounce height for each ball inthe experiment. When your ball bounces, it is squishing when it hits the ground, then unsquishing as it bounces back up. For trials 27, repeat steps 5 and 6 but drop the ball from the height indicated in.
The bouncing ball simulator was first designed by a german company called telefunken. How does theheight from whichh you drop a ball affect height that it will bounce. Explain what is happening in the experiment in relation to relevant theory. Under the influence of gravitation, interesting quantum phenomena such as collapses and revivals of the wave function may be visible. Since each group uses a different ball, they generate different sets of data. My experiment is studying the way in which a ball bounces and how much different types of balls bounce. I am once again enthused to demonstrate borax bouncy ball experiment to all of you which we tried at home with my two little angels. Pdf in this paper, the dynamics of a bouncing ball is described for several common ball types. Students did as many trials as they wanted and then used their data to. Determine how the drop height gravitational potential energy of a ball affects the bounce height kinetic energy of the ball materials 2 different ball types graph paper meter stick tape balance procedure follow the steps below to conduct your experiment. They will be dropping each type of ball 5 times from 100 cm and 200 cm and.
The results of an analysis of two target surfaces used in a bouncing ball experiment are presented. Download fulltext pdf download fulltext pdf qbounce, the quantum bouncing ball experiment article pdf available in physics procedia 17. Almost everybody, at some point in their lives, has bounced a rubber ball against the wall or floor and observed its motion. For this activity, you are going to investigate the effect the. To see more on this, visit writing better introductions. Have each group set up a testing station and follow the directions on their. In this paper, the dynamics of a bouncing ball is described for several common ball types having.
Ks3 how science works bouncy balls practical teaching. When the bouncy ball is stretched, these polymer chains uncoil and straighten. Materials what you need to know american society for. Computer modelling enables them to relate the measurement results to the theory. Bouncing balls lab bouncing balls at different heights.
With this assumption, the equation of kinetic energy can be used to find the velocity. The bouncing ball analog computer introduction the goal of this project was to design and build a small analog computer called the bouncing ball simulator. Pdf the bounce of a ball is a seemingly innocuous event that can. Bouncing balls were originally made of natural rubber, though now bouncing balls can be made of plastics and other polymers or even treated leather. With the help of a highspeed camera they can study the motion in detail. In this case, the class was learning about energy transfers, transformations, and types of energy forms. A bouncing ball model is a classic example of a hybrid dynamic system. Just be sure not to bounce it too high unless you are ready for a messy result.
Roll the ball between the palms of your hands to mold it into a sphere. Lesson to help any ks3 class get their heads around planning and carrying out an experiment. Bouncing ball experiment by giselly zepeda on prezi. Drop do not throw the ball from a carefully measured height using the meter stick. I have actually been a big fan of dover for a long time and my guess is you have too, only you may not even. Repeat steps 35 two more times so you have three trials of data collected. In this experiment, we are going to turn a regular raw egg into a bouncy egg.
Kids science fair project about the bouncing height of a ball. Once the ball is no longer sticky, go ahead and bounce it. It may come to a complete rest, for example if it were a ball of soft putty. It is shown that if a ball is dropped onto a flat surface with an initial spin, or component of velocity horizontal to the surface, the ball will travel horizontally in one direction while it executes multiple bounces. Bouncing ball experiment lesson plan for 8th 12th grade. See the bouncing ball chart for an example of how to create the chart. Drop the ball 4 more times from 40 cm, recording the bounce height each time, for a total of 5 drops. Steps involved in making a bouncing ball with ingredients. However, this is unlikely within the scope of this experiment. Give each group a golf ball, tennis ball and rubber ball. Simple projects using household recyclables by roz fulcher and published by dover publications. Bouncing balls were originally made of natural rubber, though now they can be made from plastics and.
The bounce of a ball rod cross physics department, university of sydney, 2006 australia received 17 february 1998. Bouncing ball investigation essay bouncing ball investigation this is an experiment to investigate bouncing balls and how they behave in different situations. You can store your plastic ball in a sealed ziploc bag when you are finished playing with it. This experiment requires a ball that will bounce and a meter stick or other measuring device. Besure to perform 3trials, and allow time for team members torecord the data. Diy bouncy balls is a project from the book science around the house. A piston in the base of the instrument moves in response to a command waveform typically a sine wave.
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