Our experts wont do the work for you, but they will make suggestions and offer guidance if you come to them with specific questions. In this case, the class was learning about energy transfers, transformations, and types of energy forms. The result will be an egg that feel rubbery like a bouncy ball and does bounce. Objective in this experiment you will test if air pressure will affect the dynamics of ball bouncing. 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. Learning objectives state what a hypothesis is, describe the three variables, explain how you plan an experiment. In this lesson, students conduct a series of experiments with different balls to observe which bounce the highest and to.
Then color abar to match the average height ofeach ball type. For example, think of hitting a baseball, heading a soccer ball into the net, or hitting a tennis ball with a racquet. 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. Determine how high the ball rebounds on its first bounce. As the mass of the ball is an important factor in this exploration, either have a balance available for student use, or find the mass of each ball prior to the experiment and mark each ball. Ball bounce lab investigating kinetic and potential energy.
Bouncing ball investigation essay bouncing ball investigation this is an experiment to investigate bouncing balls and how they behave in different situations. Glue on the bouncy ball contains a long chain of molecules and they are called polymers. Talk with the students about coming up with a system for releasing the ball and starting the stop watch. Youve followed a procedure to make a bouncing ball. Investigating the relationship between the drop height and. The dynamics of the wavefunction of a neutron in the gravity potential has been observed and transitions between discrete energy level have been realized. Testing our assumptions about the physics of bouncing balls in our experiment we dropped thirty wilson brand extra duty tennis balls from five different heights. Use the triple beam balance to determine the mass of the ball and record the ball s mass in the data table. Release the ball and allow it to drop to the floor. Pdf rhythmically bouncing a ball with a racket was investigated and modeled with a nonlinear map. Press start in data studio to begin recording data. Bouncing ball physics is an interesting subject of analysis, demonstrating several interesting dynamics principles related to acceleration, momentum, and energy. The demonstration centers around the creation of a polymer slime made. When you drop it on the floor, it changes some of its energy into other forms, such as heat, each time it hits the floor.
The tennis ball should bounce off of the basketball and fly significantly higher than it did when you dropped it directly onto the ground. Repeat steps 35 two more times so you have three trials of data collected. Kids science fair project about the bouncing height of a ball. To see more on this, visit writing better introductions. At the end ofthe experiment, everyone should use their calculators and figure the average bounce height for each ball inthe experiment. For want of a better term i shall refer to this as a somewhat inelastic collision. You have no used chemistry to make your own bouncing ball.
For street hockey the material used for the wiffle ball and for the tile floor would be the best because it is the least bouncy combination. Drop do not throw the ball from a carefully measured height using the meter stick. My variables are height, time for bounces, mass of ball, bouncing surface and number of bounces. Check with your teammates to be sure that you all have the same results. 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. Results are presented for a tennis ball, a baseball, a golf ball, a. They will be dropping each type of ball 5 times from 100 cm and 200 cm and. 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. The findings indicated subtle changes occur in the bounce efficiency of the tennis ball ranging from 37.
This experiment is as old as the hills maybe even older. Make sure that the meter stick starts with 0 is at the bottom. Step4 watch as the smaller ball flies off into the air. While balls have been used as toys forever, the bouncing ball is a more recent innovation. Numeric example in my experiment, the ball was dropped from a height of 6 feet and begins bouncing. Bouncy balls objectives to gain a general understanding of what polymers are and what characteristics they possess. Synchronization to a bouncing ball with a realistic motion trajectory.
Determine the height of the drop and the bounce by measuring from the bottom of the ball. Pdf bounce of a spinning ball near normal incidence. Repeat steps 3 and 4 but change the drop height to 1oocm, 10 cm and 200 cm 6. Pdf introducing viscoelasticity to precollege students through a.
One person holds the ball as high as possible and drops it. Bouncing balls were originally made of natural rubber, though now they can be made from plastics and other polymers, even treated leather. Also, a bouncing ball could cause more injuries from people. Besure to perform 3trials, and allow time for team members torecord the data. The other partner should measure and record the distance between the sensor and the ball. The effect of dropping a ball from different heights on. From dropping the ball we can see how high the ball will bounce to after having a loss or gain of energy due to sound. We give a short description of the qbounceexperiment. When the game starts, multiple rows of color balls will slowly move downward from the top. Which ball and surface from the experiment would be best for playing basketball. Polymer demonstrations at the museum of science and industry glenna smith anthony todd background. Choose a ball type and record the ball type above the first data table.
Before starting a game of squash, most players will warm up the ball by knocking it around the court. Bouncing ball experiment by giselly zepeda on prezi. For this science project you will need to develop your own experimental procedure. Nov 09, 2014 lesson to help any ks3 class get their heads around planning and carrying out an experiment. In a hollow ball, the change in temperature causes a change in air pressure within the ball. Repeat steps 3 and 4 but change the drop height to 1oocm, 150 cm and 200 cm 6. Let one partner hold the ball directly under the probe at least 15 cm from sensor. Sep 04, 20 form a students were given a ball and needed to find a relationship between the ball s drop height and initial bounce height. Form a students were given a ball and needed to find a relationship between the balls drop height and initial bounce height. For the experiment, you should have a staff or large board with clear lines marking measurement intervals behind the bouncing ball. Five different kinds of balls, all of which bounce pretty well. Drop a ball from a height of 3 ft, timing from when the ball is released until the ball stops bouncing. If you would like a detailed view of what happens, you can use a camera to film the experiment.
Record the initial height, y initial, from which the ball is dropped. Add a few drops of food coloring if youd like to color your bouncy ball. The results of control experiment 1 showed that combining the two manipulations i. However, the exact modelling of the behaviour is complex and of interest in. Sample mold, and polymer and composite bouncing balls. Because science values accuracy, and estimating the height of a bouncing ball in real time is a bit of a dicey proposition, you should have a camera that can see the ball and the measuring device behind it record your different trials. Bouncing balls when baseball was in its infancy before 1848, the ball had plenty of bounce. With street hockey, you do not want the puck, or ball, to bounce because it is very difficult to hit a bouncing ball with your stick. A color ball is placed inside the launcher at the bottom of the play area, while the next ball will also be displayed. 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. 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. Bouncing balls experiment 2 purpose what do you want to find out. The bouncy ball in this activity is made from a polymer. A bouncing ball model is a classic example of a hybrid dynamic system.
Make your own bouncy ball out of common household ingredients. Meter stick ping pong ball timer computer the purpose of this lab is to. Bouncing ball problem and geometric series a motivating example for module 3 project description this project demonstrates the following concepts in integral calculus. Design an experiment to compare the properties of two different polymer balls. Calculate the gravitational potential energy gpe for the ball at each drop height. Bouncing ball experiment our simple experiment is to drop a ping pong ball weighed at 3 grams from a height of 1 metre then 90cm, 80cm, 70cm, 60cm, 50cm, 40cm and of course zero cm. In this lesson, students conduct a series of experiments with different balls to observe which bounce the highest and to see how they could make balls bounce higher. Pdf we investigate the coefficient of normal restitution as a function of the impact velocity. The bounce of a ball rod cross physics department, university of sydney, 2006 australia received 17 february 1998. Your task is to find out what percentage of the initial energy of a ball is lost when it hits the floor. Just be sure not to bounce it too high unless you are ready for a messy result.
Bouncing balls were originally made of natural rubber, though they are now made of plastics and other polymers and even treated leather. In the arcade classic of bouncing balls, your goal is to form groups of 3 or more balls of the same color so that they can be destroyed. Graph your data on the bar graph by first writing in the different names ofthe ball types on the lines at the bottom. In one bowl, combine 4 tablespoons of warm water and 1 teaspoon of borax. Now you can vary the procedure and use your observations to make predictions about the effect of the changes. This bouncing ball experiment lesson plan is suitable for 8th 12th grade.
Investigating the relationship between the drop height and time of 6 bounces of a super ball. Check with your teammates to besure that you all have the same results. In this paper, the dynamics of a bouncing ball is described for several common ball types having. Find eight tennis balls to use for your experiment. A big heavy ball like a football a small light ball like a mini foam ball, or tennis ball how do i do it. Lee d, port nl, georgopoulos ap 1997 manual interception of. Put two tennis balls in the freezer, two in the refrigerator. Understand processes that build and break down polymers. Pick one of the balls and ask students to brainstorm some ways to make the ball bounce higher increase the force with which you bounce the ball to the ground, raise the height from which the ball is thrown, add more air to balls such as basketballs, into which air can be pumped, etc. Bouncing ball experiment pacific lutheran university. Pdf complex velocity dependence of the coefficient of.
This raises the temperature of the ball and increases the bounciness. The coefficient of restitution can thus be used to compare how well different balls bounce. Abstract the hybrid rhythmic ballbouncing task conside red in this study. 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. Make a note of which one bounces up higher and how high they bounce. There are many different variables that would affect the bounce height of a ball. Sep 05, 20 the experiment will investigate the bounce efficiency of a tennis ball when dropped from different heights. Pdf a spinning ball incident at right angles to a surface bounces at an oblique angle and with reduced spin. When baseball was in its infancy before 1848, the ball had plenty of bounce.
Learners drop a ball from different heights and measure the corresponding bounce. Under the influence of gravitation, interesting quantum phenomena such as collapses and revivals of the wave function may be visible. If you would like to discuss your ideas or need help troubleshooting, use the ask an expert forum. Data is collected directly from the experiment and the trajectory of the ball is plotted. In this experiment you can investigate the effect of air pressure on ball bouncing. Does the temperature of a bouncy ball affect its bounce. Few independent variables will be changed, so the investigation is easy to manage, and the data is easier to process. Heres a fun science experiment that kids can carry out on their own. You need a golf ball, a stopwatch, and a meter stick. You can use chemistry to make your own bouncing ball. To compare how high a ball will bounce on three different surfaces. The bouncing ball experiment is a precision electromechanical instrument for investigating nonlinear dynamics. In this experiment, we are going to turn a regular raw egg into a bouncy egg.
Write down the steps you are going to take during this experiment in a way that someone else could repeat the experiment exactly the way you do. I think that will make the ball bounce the highest and will make the ball bounce the lowest. In this paper, the dynamics of a bouncing ball is described for several common ball types having different bounce characteristics. With the help of a highspeed camera they can study the motion in detail. Observations you can make and then compare as you change the composition of the ball include the diameter of the finished ball, how sticky it is, how long it takes the material to. Once the ball is no longer sticky, go ahead and bounce it. No professional equipment such as sensors or monitors could have been used to check exactly what height the ball bounced to on the first bounce. In this work, a simple, safe and economic handson experiment is presented with the objective of providing an engaging experience that promotes. A piston in the base of the instrument moves in response to a command waveform typically a sine wave. We used tennis balls in our study because, unlike baseballs or billiards for example, tennis balls are designed to bounce when dropped. This happens because the basketball hits the ground first and transfers a large amount of kinetic energy into the tennis ball. 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. 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. Have each group set up a testing station and follow the directions on their.
Explain what is happening in the experiment in relation to relevant theory. When glue is added to borax solution the polymers are linked together forming a net. The results of the experiment support the hypothesis that as drop height increases, so too will the bounce height due to an increase in gravitational potential energy, however the bounce efficiency remained relatively consistent. Give each group a golf ball, tennis ball and rubber ball. We throw them, dribble them, hit them, kick them, and they always bounce back. You can store your plastic ball in a sealed ziploc bag when you are finished playing with it. All of the sports associations have hired you to develop the next big sport. Use the information in the summary tab as a starting place. An elastic ball bounces on the piston and exhibits a surprisingly wide range of dynamic behaviors.
Repeat steps 3 and 4 but change the drop height to 1oocm, 150 cm and 200 cm. Materials what you need to know american society for. Does the ball actually perfectly bounce off of the floor in our experiment. Using slow motion to estimate the height of a bouncing ball experiment duration. Can we determine how much energy is lost in the bounce. Doing so will maximize the time of flight of the ball and make it easier to measure the time accurately. Set the wooden board flat on the ground next to a wall or table.
If there happens to be a little heap of gunpowder lying on the table where the ball hits it, it may bounce back with a faster speed than it had immediately before collision. A ball is thrown up with a velocity of 15 ms from a height of 10 m. The bouncing ball apparatus as an experimental tool. Drop the ball to the floor and record the height the ball reaches on its first bounce. The experiment is also reliable because of the fact that even in the actual experiment the tennis ball was dropped on each surface 3 times, and an average height was found as well. Understand how polymers can be broken down into monomers. The law of conservation of energy implies that a bouncing ball will bounce forever. Ks3 how science works bouncy balls practical teaching resources. To find out, we need to analyze the system with a clever choice of initial and final states. This experiment requires a ball that will bounce and a meter stick or other measuring device. Computer modelling enables them to relate the measurement results to the theory. Todays baseball is 9 to 9 14 inches in circumference, is made up of layers of yarn over a rubbercoated cork center and may not seem to have bounce. Since each group uses a different ball, they generate different sets of data.
As you design this experiment, be sure to pay attention to the independent variable the variable that you change in the experiment. Measure the height the ball reaches after the first bounce and. The earliest baseballs had a rubber core and were somewhat smaller. Bouncing ball experiment lesson plan for 8th 12th grade. One factor that can influence the bounce of a ball is the temperature of the ball. Introduction in this laboratory im going to relate the time that a ball needs for 6 bounces from different dropping heights. The ball bounces due to the polymers crosslinked together.
Currently, msi runs a demonstration entitled polymers, petrochemicals and you. The bouncing ball in this activity is made from a polymer. 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. Additionally corn starch binds the molecules and gives them shape. Bouncing ball experiment bouncing ball experiment a squash ball is a hollow ball made of rubber, with air inside. Before conducting this experiment, use this time to formulate your hypothesis. The height to which the ball bounces is to be estimated as carefully as possible.
Balls have been toys for practically forever, but the bouncing ball is more recent of an innovation. The experiment will investigate the bounce efficiency of a tennis ball when dropped from different heights. Divide your students into groups of 45 students each. This help to greatly increase the accuracy of the experiment. A color ball is placed inside the launcher at the bottom of the play area. Download fulltext pdf download fulltext pdf qbounce, the quantum bouncing ball experiment article pdf available in physics procedia 17. Design an experiment to test your hypothesisprediction. Students did as many trials as they wanted and then used their data to. Tape the meter stick to the wall or table as shown. Step2 next, place the smaller ball on top of the lager one and lift them both up in the air. Graph your data on the bar graph by first writing in the different names of the ball types on the lines at the bottom.
Almost everybody, at some point in their lives, has bounced a rubber ball. The effectiveness of these maps to represent the actual bouncing ball experimental system is compared. Drop a ball from 1 foot off of the floor, slightly in front of a yardstick. Several aspects of a bouncing balls behaviour serve as an introduction to mechanics in high school or undergraduate level physics courses.