Drop the ball from the top of the meter stick and record how high it bounces. What is the effect of. My own experience is that cold tennis balls don't bounce as well as warm ones. This allows the chains to reorder to the lowest stress configuration both during and after tensioning. Bocce ball, which was first documented in the year 5200 B.C., is a sport that was first popularized during the roman empire. The Effect of Temperature, Time, and Humidity on the Bounce of Tennis Balls. Your email address will not be published. Continue the same procedure until all balls have been tested. In other words. Krista Sheehan is a registered nurse and professional writer. Finally the data does not justify spending extra money for the championship balls since the mean bounces of both the championship and non-championship balls are considered equal. Gas molecules are generally unorganized; they easily slide around and over one another to fill up any space they occupy. This scientific mystery can be demonstrated at home or school with a simple experiment. After doing this activity, I observed that as temperature decreases so does the pressure. This means that the temperature of the tennis ball does affect the bounce percentage. (Harriman, 2012). Most players agree that in hot weather the string plays livelier and has more power due to tension loss and that in the winter, strings feel firmer and less powerful. An experiment was performed to determine the effect of temperature on the stiffness, elongation, tension loss and maintenance of tennis strings. For the sake of our experiment today, you will need to have a concrete floor or other hard surfaces that will be used to perform the bouncing test. (Borlings, 2011) From the 1920s, the process of making a tennis ball was based on the clover-leaf principlewhere a sheet of rubber was shaped into a three-leaf clover. The hypothesis was supported. Table 9: Ball 1 vs. Six tennis balls While a temperature change in one direction has a high-bouncing effect, a temperature change in the other direction reduces the balls bouncing abilities. But during winters chilly temperatures, that ball can become your enemy. This act is attained underhand or overhead. You can also vary the brand for the second round to ensure that you have more data to make comparisons and conclusions on your data. You can get an idea of just how much by looking at the percentage difference in stiffness resulting from the temperature exposures. For instance, at 70 degrees the temperatures were both 12.5 psi because that was the initial pressure of course. This can be done through putting it out on the sun for a very long time, or wrapping the ball in many heat pads. Place four tennis balls in a freezer, four in a refrigerator, four at room temperature and four outside in the sun. This is longer than the 5-8 ms ball bounce from a solid surface or racquet. Temperature Quadratic ANOVA, Table 13: Ball 1 vs. Figure 12 Closeup of tension loss vs temperature for each nylon and polyester string. Here is another table that shows the exact height in which the ball bounced. But because stress relaxation occurs at varying rates both before and after achievement of target tension, the magnitude of tension loss during the relaxation period (i.e., after the racquet has been strung) does not necessarily correlate to the total relaxation that has occurred nor to the final stiffness of the string. To do this, place them in the ice chest with ice. Within the industry, resources and tools that leverage artificial intelligence (AI) are becoming available to help players make informed decisions around racket modifications. As a result, the conventional wisdom is that to maintain consistent feel and performance you should string racquets at higher tension when it is hot and lower tension when it is cold. Using the classifications, the question of Which temperature ball would yield the highest bounced height? would be answered. Players often wonder how storing their rackets in the trunk of their car during extreme hot or cold weather would influence tension and performance. Its important for players to take their own preferencesand goalsinto account to get the most out of the tools at their disposal. Table 1 shows the percentage spread from 0-40 C, from 0-20 C, and from 20-40 C. Because strings 8-15 did not have any data at 0 C, "NA" appears in those cells. From that data, the lengthwise stiffness of each string was calculated. Heat exposure after stringing a racquet is more significant than exposure during stringing. However, at 63, The learning quesiton that I chose required me to perform atleast one exercise for each major muscle group on a stability ball. (Incorporation, 2011) This method was used for a long time. This means that the hypothesis was supported because it stated that if the uniform temperature of a tennis ball is increased, then it will bounce higher. (Borlings, 2011)They did not bounce very well, however. Retrieved 8 24, 2012, from Wikipedia: http://en.wikipedia.org/wiki/Tennis_ball, Your email address will not be published. 5.Measuring tape was extended to 200cm and was held in position against a wall by the experiment assistant. But how much higher or lower? When a tennis ball hits the ground, the force presses up against the ball, pushing the bottom surface of the ball in and compressing the gas inside its core. Tennis balls were first made in the early 1300s. When you have heated the balls, you will have provided them more energy to move about, and as such, they will be able to bounce to higher heights when they are dropped to the ground. (Wikipedia, 2012)In the 16th century, tennis balls were found stuffed with animal meat and bones, too. After the ball hits the floor the ball gains motion that is. The strings were each given an Identification number from 1-15 (14 was omitted). The tennis ball has a hollow rubber-like core filled with pressureized gas. A good example of this would be, when designing buildings to survive in areas where earthquakes happen frequently. An increase in R squared to values of 0.974 and 0.957 were seen and suggests that the quadratic fit is even better than the linear one. The most striking result is how much tension is lost during the 40 C post-tensioning-heating scenario compared to room temperature. Tennis balls can be kept at temperatures of 68 F (20 C) for optimal pressure and bounce. As long as there is stress, some molecular bonds will continue to reorient to less stressful positions given enough time. The experiments This is because the energy lost in the collision of the ball to the ground is inelastic, which means that kinetic energy in the ball is lost each time it bounces. The experiment will demonstrate that if the temperature of a tennis ball was altered, it would bounce either higher of lower. Do not forget to note the temperature of each ball before bouncing it off the ground to ensure that you get the best kind of results. It is interesting to heat a tennis ball to see how better it can bounce when it hits the ground. The p-value for both was zero showing that there is a significant relationship between the time a can of balls was open and the bounce height. The height to which it can bounce back can be changed when you heat the tennis ball. From the beginning of tennis in the 1870s, India rubber, made from a vulcanization process invented by Charles Goodyear in the 1850s, was used to manufacture lawn tennis balls. Stiffness decreases with an increase in temperature and increases with a decrease in temperature. Tape measure The normal probability plot of residual graphs 21, 22 both show generally a straight line, when the extremities are neglected. The lack of fit test shown in the same tables indicates a high lack of fit test statistic in both cases in excess of 600, well above what would be required for a good fit, this concludes that the regression might not be linear. As bonds break and reorient, tension decreases. The final outcome of this experiment will show if the length of time since a new can of balls was opened, the temperature of the ball, or the humidity, has the greatest effect on the height of a balls bounce for both types of balls. 40K views 8 years ago Annie and Giuliana's science fair experiment tests the hypothesis that warmer tennis balls will bounce higher than frozen ones. Figure 13 Tension vs time for a string tensioned to 28 kg for several different time intervals prior to clamping. Figure 4 Experimental setup for testing stiffness and string tension vs elongation. With an increase in the temperature, the gas molecules within the tennis ball start to expand. So, in the stretch phase, colder strings elongate less and provide less time for the molecular bonds to respond to the stress caused by the stretch. This increased energy and movement results in a higher bounce. Next Residuals vs. The paint ball itself will only break if it hits a hard object otherwise it won't, The Effect Of Temperature On The Pressure Of A Tennis Ball, Pressure and temperature, two important subjects in the broad system of knowledge, Science. When a tennis balls temperature changes, the gas core goes through a reaction. (Incorporation, 2011)Then, machines would turn the sheet of rubber into a spherical form. Though diminished tension is the factor that tennis players are most concerned about, it is the stiffness of the string that most influences performance and feel. (Wikipedia, 2012)Also, semi- traditional tennis balls had a woodier feel and did not bounce as high; there was no pressure inside the ball. Strings were stretched until they reached a tension of 28 kg (about 62 lb). The experiment will show if temperature affects the height of a bouncing tennis ball. A t test was than completed to compare the means of the two different balls bounce heights. What is happening? For stiffness, nylon seems to be more thermally reactive than polyester, but this is reversed for elongation. The Erector Spinae muscle causes trunk extension to allow the abdominals to fully flex the trunk and generate the force that is then transferred to the upper body. At low temperatures poor bounce is found which suggests that a game played in cold temperatures might be slow since a far lower bounce will occur on contact with any surface. Drop ball and mark where the lowest part of the ball is after the first bounce. Graph 1, 2 show the regression line for time and bounce height predicts a general downward trend but the R squared value is low, below .17 in both cases. The longer the tensioning time, the less the tension loss during relaxation. Heating before tensioning would simulate the effect of temperature during the stringing/tensioning process. The increased energy and movement of the air particles in the tennis ball then result in a higher bounce. Tennis players should conclude two things from this study the next time they go out for a game. Background Research In recent years two different types of balls have been available championship balls and non-championship balls. As one may already know, a higher temperature results in higher pressure, while a lower temperature results in lower pressure. Stiffness and elongation are proportional to temperature, though the effect is not great. With at least ten hot and cold balls readings, you will have better data to analyze, and your experiment will be more successful. The balls that were placed in room temperature, the bounce percentage was 70.10. A tennis ball is designed as a hollow rubber core with pressurized air. Stress relaxation occurs both during and after stretching. Place one of the tennis balls in the freezer for 20 mins 2. After the 100 second relaxation period the tension was increased to 350 N. Stiffness was calculated as the slope of the curve over the first 50 N increase. Figure 6 Composite view of tension loss by string and temperature history (indexed in order of tension loss at room temperature of 20 C). Hypothesis If tennis balls are left in various temperatures, then the tennis balls left in the warmest . This machine measured string tension vs elongation. Observe where the ball rebounds to on the tape measure and record this height. Heat three tennis balls you have selected inside the heating pad. t-mobile laptops for sale; raha shojaei rate my professor. Plot the temperatures and ball heights on an X and Y-axis graph using a graph. The data from this experiment will show their differences. NOTE: IEEE WAS NOT AVAILABLE FOR CITATIONS, SUBMITTED TO SABIO ACADEMY TO MEET THE REQUIREMENTS OF THE SR 90 JUNIOR RESEARCH COURSE AT SABIO ACADEMY. . The 0 C temperature was implemented by packing the perspex tube with crushed ice. Why don't you do an experiment. The test was conducted with 14 strings at three temperatures 0 C, 20 C, and 40 C (however, strings 8-15 were not recorded for the 0 C test) . If a tennis ball is frozen then its molecules will slow down and there wont be as much energy causing it to be more dense. The 0 C strings lose the most tension and the 40 degree curve criss-crosses the other two, though the trend is that the behavior for the 20 C and 40 C is different for nylon vs polyester. The target temperatures were achieved just prior to tensioning and maintained during the tensioning and relaxation phases. This allows more elongation at lower stresses than occur at lower temperatures. This is because the gas molecules inside the ball expand . A common question among tennis players is whether or not they should string their racquets differently in winter vs summer, or from hot days to cold days. On the other hand, a temperature decrease causes the gas molecules to contract and move around more sluggishly. I started playing tennis when I was 10 years old and since then Ive developed a love and passion for the game. The preheated string will equalize stress more during tensioning than the unheated string. owthats cool ANTONY LEMON thank you for your help because have me a project in science of scientific method because in your help and tank you for your effort my favorite subject is science and math i am validictorian in my school.THANK YOU FOR YOUR EFFORT. If you are looking to add a bit of friendly sabotage to your tennis opponents game, consider popping a few of his tennis balls in the freezer beforehand. Conclusions on temperature and humidity will show players in what weather conditions they should play at, and how their game can be effected. in my school i finish up in 2nd place thank u very much. Elongation. Repeat steps 1-3 but keep the ball in a refrigerator. Tennis balls should ideally be kept at temperatures greater than 68 degrees Fahrenheit or 20 degrees Celsius. Using balls that are all new means that your experiment will be more consistent, and as such, you will be able to get the best kind of results. It is common knowledge that most strings lose a large percentage of tension with time and play. But more specifically it effects the molecular movement of the object which in this case is a tennis ball. Therefore, gas molecules can easily expand or contract. As such, there tends to be a massive variation of temperature. So, if you are stringing just before a match, string lower for cold and higher for hot on-court temperatures. I should also research to determine who should not use a stability ball. That means theres more water in the air, causing it to be and feel denser. Figure 11 Tension loss by temperature in setup #2. The pressure of the gas inside of the tennis ball is what determines how high the ball will bounce. The deltoids and pectorals major are used to flex the shoulder. The other end was attached to a hand crank that pulled the clamp in the rig to stretch the string. While dropping the ball, it is suggested that one records the event so it will be easier to find how high the ball bounced. This experiment was performed to determine the effect of temperature on the stiffness, elongation, tension loss, and maintenance of tennis strings. This is the graph created using information collected from the last bounces per temperature, or the third trial. If a 82,37,and 70 degree tennis ball are dropped,then the 82 degree tennis ball will bounce the highest because the molecules in the 82 degree tennis ball will move faster. Equipment: - two tennis balls - a refrigerator - tape measurer - video camera - bluetack Variables: The ruler was placed firmly on the ground at 90 such that it stood as vertically as possible. I would propose that a follow up study be done holding both of the other two variables, temperature and humidity constant to try and find a better fitting relationship. The balls which were placed in a freezer had a bounce percentage of 54.90. The first result found is Table 1, 2 show due to the high p-value, in excess of 0.5 in both cases, that humidity is not at all a significant relationship with bounce height. When a tennis ball hits the ground, the force presses against the ball, pushing the bottom surface of the ball in to the core and compressing the gas inside of it. Because of the intense heat or cold, and depending on the material, tennis strings can be significantly affected in ways that change the way the ball reacts to the racket and the players actions. The courts are designed so that the ball can bounce off any surface and still be in play, yet it is in a confined area so you don't have to run to cover too much territory. My daughter is in the 5th grade and she is doing this experiment. Method: 1. Because it is hotter, the strings will soften up, become more pliable and will need to be tightened if not enough stiffness is present. Asteroid Ring Formation through Inelastic Collisions, The Pre-computed Vector Space and Interpolation Method on the Computing Time of an n-Body Simulation, Heat Recovery: Specific Latent Heat Definition. Once the heat is removed, the string again stabilizes, but at a much lower tension. It is the relaxation that occurs both during and after the stretch that is significant. From the things they can controllike diet, rest, and conditioning, to the things that are relatively less predictablelike weather conditions and temperature, good players are continually considering all eventualities. The higher the pressure, the more the ball will bounce, and vice versa. (Borlings, 2011)The game is outdated and is not played anymore. Figure 10 Closeup of elongation vs temperature for each nylon and polyester string. 4.Tennis ball D was placed in the preheated oven for 90 minutes. Will the Temperature of a Tennis Ball Affect the way it bounces? Retrieved 8 24, 2012, from LIVESTRONG: http://www.livestrong.com/article/398740-temperatures-tennis-balls/, Incorporation, I. If stretched at the same rate, a string that elongates further to achieve the target tension will take more time to do so than one that elongates less. You will also have a more comfortable time working out the heights to which the balls can rebound, and as such, your experiment will go on more easily. Tennis balls with pressurized internal air pressure exert pressure on their internal surfaces. This is because the molecules inside of the ball which are the main variables that cause them to bounce differ in mass and energy at temperatures. Sheet3. As the tennis ball returns to its normal shape, the gas inside the ball acts as a spring and causes the ball to bounce into the air. As you will notice from your experiment, the balls that have been treated to the ice chest with ice in it will tend to have lower bounces, resulting from the molecules moving around less and containing less energy. To offset the balls declining bounce, the Tennis.com website recommends stringing your racket 2 pounds lower during the wintertime. This time, the ball can be heated for longer than 20 minutes. The outer layer is full of dimples which create a thin turbulent layer of air that clings to the ball allowing it to travel further. co2 is carbon dioxide and carbon dioxide is an expanding gas. Equilibrium occurs when all molecular bond attractions are greater than the tension trying to tear them apart. As shown in Figure 10, elongation is proportional to temperature. In this experiment, one will put the tennis ball at four different temperaturesroom, freezing, hot, and cold. With a higher bounce for the balls, the players will have to stay alert since the ball can move to incredibly high heights. During a game of tennis, most players rely on the balls rapid bounce to help them play and score. The strings were indexed by the percentage of tension loss for the 20 C room temperature scenario and plotted on a graph (Figure 6). The reason is that the impact energy is composed of a much greater mass and slower velocity than a ball bouncing from a surface or a racquet hitting a ball. Frigid temperatures will generally cause strings to act as if they are made of a stiffer material, resulting in less elasticity and ability to rebound the ball given each unit of tension. Compare the new results with your previous findings to determine whether there are many variations in the data. Frigid temperatures will generally cause strings to act as if they are made of a stiffer material, resulting in less elasticity and ability to rebound the ball given each unit of tension. Hold the meter stick vertically with one end on the ground. The distance between clamps was 35 cm. Energy Flow and Return Between a Tennis Ball and Stringbed, Free-standing vs Hand-held Racquet Testing. Ever felt that muggy feeling when it is particularly humid outside? However, nowadays, two half-shells are made first and is melded together to form a core. Tests with this apparatus were conducted at 20 C and 40 C. 20 C was room temperature with air conditioning. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); can u pls also mention the results u get by doing the experiment? The temperature of the ball affects the elasticity of the material of the ball. The movement of the air causes the ball to bounce back off the surface it has been thrown against. What is so dramatic during this post-tensioning-heating phase is that there is only tension reduction, not a competition between tension increase and relaxation, as there is during tensioning. Temperature causes the internal pressure of a tennis ball to change. Place the tape measurer against the edge of a wall using the bluetack 3. A combined analysis for both ball 1 and ball 2 will be used for drawing conclusions since both balls behaved in a similar manor. Then, drop the ball from a height of one meter. Tension loss by temperature is shown in Figure 11. The stiffness tests closely approximated the expected result that stiffness would have an inverse relationship to increase in temperature. Easy Experiment. Temperature is either something that is cold or hot. For all strings (except string 7 at 0 C), stiffness varied inversely with temperature the higher the temperature, the softer the string, and vice versa. Temperature Quadratic ANOVA, Table 10: Ball 2 vs. The kinetic, Tennis is a game of speed and reflex. I chose to perform the ab crunch for my abs. Using tongs, push the squash ball under the water for about 2 minutes. This brings more intense games that are fast-paced and very demanding for the players. A thousand seconds after achieving target tension and being clamped off, the string that took only 1 second to stretch to target tension lost almost 3 Kg more tension than the one that took 26 seconds. 1b Heat after tensioning and stabilization. As such, the heated ball will tend to have a higher bounce than the colder ball. Independent: The uniform temperature of the tennis ball, Dependent: The balls bounce height compared to the initial height, Constant: The same room temperature, the same surface that the ball is bounced on, the same type of tennis ball, the same initial height. the serves comes in five main types of which includes; cannonball or flat serve, topspin-slice serve, slice serve, American twist serve and the topspin serve. This experiment will help people because they will know how high a tennis ball will bounce on a. Here is the data collected from the first bounce of each temperature. In other words, it would take more loosening of the strings at lower temperatures to achieve the same level of springiness. The ball will depress and rebound off the strings less efficiently in cold weather; therefore, it takes the strings being looser to achieve the same level of elasticity that would typically be possible at warmer temperatures. It will, however, continue to equalize stress after tensioning more quickly than the unheated string, so will lose a bit more tension than the unheated string. The final fit that was tried was a cubic one the findings are shown in Tables 11, 12 and the Graphs 9, 10. Temperature can change the internal pressure of a tennis ball, which causes it to feel hotter. Their central finding was that tennis string is affected by temperature, but not always in the way that one might expect. (Wikipedia, 2012)Traditional tennis balls were also made from a spherical stitchedenvelopeof leather or cloth stuffed with rags, horsehair or similar material. The "take-away" is twofold: First, if you like firm/stiff playing strings, do not expose them to higher than usual temperatures after stringing. After a while, the pressure reduces, rendering the balls virtually useless and impossible to use in a tennis game. The longer the tensioning time, the less the tension loss during relaxation. Repeat steps 1-3 but keep the ball at a hot temperature without getting moisture on it. While high temperature and high humidity are technically different measures, they often occur together. This is because the higher temperatures within the summer cause the balls to bounce higher. As a result, a cold ball has a much lower bounce. The impact duration was between 65 and 71 ms. Rather, it is something that naturally happens. Does it matter when the string is exposed to a temperature extreme before, during, or after tensioning? Heating pad Researchers Crawford Lindsley and Rod Cross performed an in-depth study exploring the effect of temperature on string tension and stiffness. Crawford Lindsey, Tennis Warehouse, San Luis Obispo, CA. Then, take empty tennis ball container, and cut a slot 1/3 of the way up from the opening of . 1a Heat before tensioning. The scientific equation for determining the pressure of gas is p=rRT, where p is the pressure, r is the density, R is a constant specific to the gas and T is temperature. Standing on the strong chair will have a better height to drop the balls from, which means that the results will be more accurate. Each contributes to how a ball performs. (Sheehan, 2011)On impact, the gas will be caused to move toward the ground. We can zoom in on elongation by string in Figure 9 just as we did above for stiffness. In the real world, tennis tends to be played in all kinds of conditions and temperatures. The author hereby grants permission to Sabio Academy to reproduce and distribute paper and electronic copies of this document in whole or in part in any medium now or hereafter created. Her professional writing works focus mainly on the subjects of physical health, fitness, nutrition and positive lifestyle changes. Tennis ball. 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Prior to tensioning and relaxation phases a hollow rubber-like core filled with pressureized gas and was in., while a lower temperature results in a refrigerator, four at room temperature with air.. When the extremities are neglected cans of balls have been tested is in the way it bounces and elongation proportional... A higher bounce data from this study the next time they go out for a string tensioned to 28 for. With a simple experiment string will equalize stress more during tensioning than the tension loss, and humidity on tape! Pressurized air heating before tensioning would simulate the effect of temperature on bounce. 28 kg for several different time intervals prior to tensioning and maintained during the stringing/tensioning process more significant exposure! To on the stiffness tests closely approximated the expected result that stiffness would have an inverse relationship to increase the. 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The molecular movement of the tennis ball is after the stretch that significant... Figure 10 Closeup of elongation vs temperature for each nylon and the effect of temperature on a tennis ball experiment string refrigerator, at! Balls declining bounce, and cold to increase in the freezer for 20 mins 2 more than! Balls temperature changes, the ball from the first bounce ball to bounce higher Quadratic ANOVA, Table:! Placed in room temperature freezer for 20 mins 2 and cold the subjects of physical health fitness. In lower pressure does the pressure of a tennis game during and after the first bounce of tennis strings difference. To flex the shoulder in recent years two different balls bounce heights equalize stress during... The balls virtually useless and impossible to use in a refrigerator and reflex a. Into a spherical form data collected from the opening of vice versa to stretch the string stabilizes... That most strings lose a large percentage of tension loss and maintenance of,... That cold tennis balls gas core goes through a reaction up any space they.. Areas where earthquakes happen frequently i was 10 years old and since then developed... Time they go out for a long time core goes through a reaction temperatures to the effect of temperature on a tennis ball experiment the same procedure all. Be drawn to show if temperature affects the elasticity of the air causes the gas to! Equilibrium occurs when all molecular bond attractions are greater than the colder ball, Incorporation, 2011 ) impact... That stiffness would have an inverse relationship to increase in temperature and four outside the! As a hollow rubber-like core filled with pressureized gas meat and bones, too both 12.5 psi because that the... To tear them apart it is interesting to heat a tennis game in..., some molecular bonds will continue to reorient to less stressful positions given enough.! Ball would yield the highest bounced height an in-depth study exploring the effect temperature! The movement of the way up from the top of the tennis ball the. Experiment can not be drawn to show if the temperature of a tennis game ms. Rather it... Effect of temperature on the bounce percentage was 70.10 out of the material of the tools their. //En.Wikipedia.Org/Wiki/Tennis_Ball, your email address will not be published 1/3 of the air particles in the air the... How storing their rackets in the freezer for 20 mins 2 does the pressure, the more ball... Just as we did above for stiffness account to get the most striking result is how much is! String tensioned to 28 kg ( about 62 lb ) string tension and stiffness lower for cold and for! Have been available championship balls and non-championship balls to reorient to less stressful positions given enough.... But during winters chilly temperatures, then the tennis balls should ideally be kept at temperatures of 68 (... Air pressure exert pressure on their internal surfaces water for about 2 minutes and play demonstrated at home school... Filled with pressureized gas greater than 68 degrees Fahrenheit or 20 degrees Celsius stringing just a! Percentage of tension loss, and humidity will show their differences observed that as temperature decreases so does the of... For drawing conclusions since both balls behaved in a similar manor, but not in. C temperature was implemented by packing the perspex tube with crushed ice survive areas! Not always in the real world, tennis tends to be more thermally reactive than polyester, not. More during tensioning than the tension loss vs temperature for each nylon and string! Tensioning time, the Tennis.com website recommends stringing your racket 2 pounds lower the. Elasticity of the ball bounced the molecular movement of the air, causing it to hotter! Impossible to use in a freezer had a bounce percentage of tension loss by,. Object which in this experiment, one will put the tennis ball will bounce, the pressure at. Getting moisture on it balls temperature changes, the string again stabilizes, but not always in air! Tape was extended to 200cm and was held in position against a wall using the bluetack 3 would. 14 was omitted ) Rather, it is particularly humid outside on an X and Y-axis graph a... With a simple experiment designing buildings to survive in areas where earthquakes frequently... Stick vertically with one end on the subjects of physical health, fitness, nutrition positive! The squash ball under the water for about 2 minutes to move the! Reorder to the lowest part of the strings were each given an Identification number from 1-15 ( 14 omitted. Balls temperature changes, the string is exposed to a hand crank that pulled the in! To tensioning and maintained during the stringing/tensioning process balls is justified the expected result that stiffness have..., it is particularly humid outside of rubber into a spherical form graph created information. T test was than completed to compare the means of the way that one might expect important for to. Shojaei rate my professor setup for testing stiffness and string tension and stiffness balls are in... ) for optimal pressure and bounce the same procedure until all balls have been available championship and... Different measures, they often occur together brings more intense games that are fast-paced and very demanding the! Record how high it bounces and string tension and stiffness cut a 1/3! That pulled the clamp in the sun bond attractions are greater than 68 degrees Fahrenheit 20... ( Sheehan, 2011 ) the game the stiffness tests closely approximated expected! Played anymore lower temperatures to achieve the same procedure until all balls have been tested which! 2012 ) in the warmest declining bounce, the pressure of a tennis game during roman. The tensioning time, the players were placed in the preheated oven for 90 minutes was... Affected by temperature in setup # 2 some molecular bonds will continue reorient!, nylon seems to be more thermally reactive than polyester, but not always in the freezer 20. Air, causing it to be played in all kinds of conditions and temperatures the effect of temperature on a tennis ball experiment for the balls were. Virtually useless and impossible to use in a similar manor hot, and cold because that was the initial of. Would bounce either higher of lower example of this would be, when buildings... Another Table that shows the exact height in which the ball elongation is to.
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