The cookie is used to store the user consent for the cookies in the category "Performance". hypothesis, we predicted that a rubber ball would bounce the highest on rough After the ball reaches terminal velocity, no more GPE is converted into KE is the ball cannot get any faster. The cookies is used to store the user consent for the cookies in the category "Necessary". This website uses cookies to improve your experience while you navigate through the website. Two half-shells are molded together to form a core, which is then molded together again. The Modus 120 pickup enables you to produce some of the most amazing sound combinations. Gravel got bounced on the least, 1 time . Tennis balls should ideally be kept at temperatures greater than 68 degrees Fahrenheit or 20 degrees Celsius. With heavy topspin on high-friction surfaces, the horizontal velocity of the ball is attenuated greatly after the ball strikes the court, and the ball jumps into the air in ways that seem unnatural to players accustomed to playing only on hardtop. By using a simple tennis ball and a thermometer, kids can measure the temperature of the ball and see how it changes as the game goes on. The higher the ball is, the more it will bounce when you warm it up in cold weather. When the temperature rises in one direction, bouncing abilities increase, whereas when the temperature falls in the other direction, they decrease. It will not have enough force to bounce if it is lit. Which ball will bounce higher off a hard surface? Harder balls have a higher recovery rate than softer ones, and clay-based balls have a higher recovery rate than rubber or synthetic balls. By conducting our experiment, we learnt that well-inflated rubber balls bounce the Balls change shape during play. The first independent variable that will be tested. If a ball reaches terminal velocity at 20cm from the floor when dropped from 2m, it will reach terminal velocity at 10cm from the floor when dropped from 1.9m. A tennis balls trajectory is determined by its temperature. Balls bounce high, allowing players to dictate how much spin they want to put on the ball. Decide on a height you want to drop the balls from . We use cookies and those of third party providers to deliver the best possible web experience and to compile statistics. For the lowest three points air resistance is approximately equal to zero due to the ball having a low velocity, as it was dropped from a low height, and therefore hits less air particles per second than a ball traveling at a faster speed. Tennis balls that are frozen will not bounce as much as those that are not. Concrete got bounced on the most, 5 times, and the highest, 55cm. Do five drops on your first surface. Experiment 2 is for testing the effect of air pressure. Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot. We aim to provide our visitors with everything they need to know about tennis, whether they are casual fans or hardcore enthusiasts. Let's see if physics can explain what happens. When the ball deforms, its molecules are stretched apart in some places and squeezed together in others. On the cardboard, mark the starting point, the point where the marble strikes the wood, and a point along the marble's path as it rolls away from the wood. The ball is slowed down by gravity so that it doesnt bounce as many times until it stops. [accessed August 4, 2006]. The ball has reached its terminal velocity and cannot fall any faster (unless dropped in a vacuum). Let the ball bounce until it stops, and then stop recording. Answer (1 of 4): The height to which a ball bounces depends on several factors: 1) The height from which it is dropped, 2) Whether it was thrown down or just dropped and how hard it was thrown, 3) How much energy is lost in the ball during the collision with the floor 4) How much energy is lost . were able to construct a successful experiment. In this experiment, one will place the tennis ball at room temperature, freezing temperature, hot temperature, and cold temperature. - Sticky tape - 1 roll. Bouncing Ball Investigation This is an experiment to investigate bouncing balls and how they behave in different situations. Then make a series of lines every 5centimeters if you are using metric measurements, or every 3inches (1/4 of a foot) if you are using English measurements. An average will then be taken. B. (2020, January 12). Here's what our experiment showed: different ground surfaces will absorb more energy than others, which means that that push back they give to the ball won't be as strong. For a falling object the Coefficient to restitution (CR) is equal to the velocity squared as the object is travelling at as it leaves the floor (v22) divided by the velocity squared as it hits the floor (v12): If dropping a ball in a vacuum all you need to know in order to know how high the ball will bounce to is h1 and CR. Internal air pressure is critical to the bounce of most tennis balls. Parallax error will be avoided by dropping the ball one time that will not be measured and placing a blob of blue tack onto the meter rule at the approximate height it bounced to. A tennis ball bounces because the air inside pushes outwards when it is in contact with a hard surface. As the height from which the ball was dropped from was increased, the GPE energy that the ball possessed before being dropped also increased. Athletic and cardio abilities are becoming a bigger factor each season, but some players remain hard courts experts. rubber ball would bounce the highest on concrete. The aim of the experiment my partner and I performed was to find out which Then when dropping the ball again eye level will be kept level with the blue tack thus avoiding parallax errors. As energy cannot be created or destroyed it follows that the energy must have come from the energy that the ball possesses. If you dont properly store your balls, youll have to replace them more frequently. : an American History (Eric Foner), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), The Methodology of the Social Sciences (Max Weber), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), 4-3 Assignment Project Management Strategies. half the results (concrete), we were incorrect about the basketball. In our investigation we had balls with different properties and we were dropping them onto surfaces with different properties. 70% is retained. Focus the students on the aim of the experiment (that is, to determine a pattern from which to make comparisons, rather . Use two people to measure the results; one person to drop the ball and one to measure the height to which it reaches after bouncing. This is due to two factors. Tennis balls are different at sea level and at high altitudes. For any other use, please contact Science Buddies. There are more than 160 different types of tennis surfaces. The only difference between the balls is that the ball dropped from a higher height gives out more thermal energy. The whole ball-bounce thing is confounded by topspin and the coefficient of friction of the surface. Place the video camera on a level that will be able to clearly record the experiment, whilst a person sits beside the tape measurer 4. METHOD: 1. The force of the ball hitting the ground causes it to bounce up, because it puts an equal force on the ball. Height the ball bounced to (average of middle three) when dropped from: 10cm = 6.7 6.7 = 66% of 10 (to the nearest percent), 20cm = 14.0 14.0 = 70% of 20 (to the nearest percent), 30cm = 22.3 22.3 = 74% of 30 (to the nearest percent). If you want to make the ball bounce higher, you can try heating it up before you play. Best hard court players of all time The tennis balls bounce in different ways. Therefore the coefficient to restitution = 0.7. Because of this, a fully inflated ball may look deflated if the temperature drops quickly. For multiple bounces, it's just like dropping the ball again from a reduced height. This is why it. The ultimate answer was that a basketball h1will start at 2m and then move down in intervals of 10cm to 10cm. When the ball hits the ground,the ground hits back with the same amount of force. But how does concrete . Use the pressure gauge to release some of the air pressure from the ball. One of the hunks of information we found was These cookies ensure basic functionalities and security features of the website, anonymously. The colder, the lower the ball bounces, and vice versa. As the ball is released, gravity pulls it downwards and transforms it into motion. The children were oblivious to these . Tiles3. These cookies track visitors across websites and collect information to provide customized ads. To a wider range of results i.e. You can repeat the experiment making use of balls of a different quality. The game can be played on various surfaces, including grass, clay, and concrete. bounces the highest on smooth concrete. When the air inside the ball expands, it pushes against the rubber and causes the ball to bounce. Take your class outside, to an area with a smooth, flat surface. The results are shorter rallies and quicker points. As it did so the downward force was partially balanced out by the upwards force of drag, increasingly so the closer the ball got to its terminal velocity. It provided me with five repeats so that the maximum and minimum results could be discounted and a reliable average could be taken. balls and surfaces will ultimately be the best combination for bouncing a ball high. Obviously, a ball won't bounce as high on carpet. If you play in hot weather, your balls may bounce significantly more. Record this result in your assignment book under trial 3 for the tennis ball. . stay constant, results in an increase in m g h, stay constant, results in a decrease in m g h, The surface onto which the ball is dropped will affect the height to which the ball bounces because for any two objects that collide, the properties of both determine the percentage of the kinetic energy either possesses approaching the collision that is conserved subsequent to the collision taking place (Coefficient to restitution) discounting the effects of air resistance. Playing in shade and with a bit of air movement is still a good idea if you want to get some exercise in the sun, but if you play outside in the shade with no breeze, you should stay in a cooler temperature range. The maximum height will have to be less than two meters as that is the maximum height that the equipment allows. Since the concrete surface is the hardest surface, it allowed more energy to be released from the ball, therefore causing it to bounce higher than it normally would on grass. Is it a straight line? The ball did not reach terminal velocity however as it did not have enough time to accelerate to its terminal velocity. Measure from the bottom of the ball. When the ball was dropped from the higher heights the ball began to show signs of reaching its terminal velocity before it reaches the ground. A hard surface, such as concrete, absorbs less energy compared with a soft surface, such as a carpeted floor. concur, which was catching the small balls. Also it will affect its bouncing properties. Therefore, Abstract and Figures. Determine how high the ball rebounds on its first bounce. If the ball bounces up more than .5 meter then, it is more elastic. The decision for the size of interval and the amount of results collected will depend upon the time taken to conduct the experiment and any other factors that may become apparent during the preliminary experiment. Why does Rafael Nadal do so well on the clay? Either the coefficient to restitution that was worked out is incorrect, which would mean that the first three results are inaccurate or subsequent results were inaccurate. The Graph on page 23 shows that all of the results were very close together. Does it slope up or down? us. Air pressure will affect the balls fall slightly as the concentration of air particles per cubic meter varies with air pressure. The trip is going to be thoroughly enjoyable. Now work out the average of the tennis ball rebound height by adding all of the measurements for the tennis ball rebound height up and then dividing the . Cross), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Give Me Liberty! Responding Variable: The height of the bounce in centimeters (these are the results that you will count) Steps: Have your partner hold the meter stick upright on the first surface. - Four surfaces (carpet, rough concrete, dirt and smooth concrete). it goes back into the ball, giving it more force to pop back up into the air. As the ball falls to the surface it has kinetic energy. It might be a good idea for students to experiment with a variety of balls to determine which one is most effective. Try bouncing different kinds of balls to test this question. What factors affect the bounce height of a ball? Hypothesis If I increase the height from which a ball is dropped then the bounce height will increase because it will increase the speed and create a larger impact causing the ball to bounce higher then dropping it from a lower height. In our Warm up the ball before it is used to increase its bounce. According to the USTA regulations ball is tested for bounce by dropping it from a height of 100 inches (2.54 m) onto ; a bounce between 53 and 58 inches (1.3462 - 1.4732 m) is acceptable. Experiment to investigate bouncing balls and surfaces will ultimately be the best web... Ball bounces, it pushes against the rubber and causes the ball hard courts Experts is! Guidance, and concrete until it stops for any other use, please contact Science Buddies and transforms into! To deliver the best possible web experience and to compile statistics you.. And vice versa in hot weather, your balls, youll have to replace them frequently. This website uses cookies to improve your experience while you navigate through the website, anonymously could! Courts Experts most tennis balls trajectory is determined by its temperature ; s see if physics can explain what.. Maximum and minimum results could be taken rebounds on its first bounce of 10cm to 10cm bouncing. 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Koehler ), we learnt that well-inflated rubber balls bounce the balls shape. Graph on page 23 shows that all of the most amazing sound combinations at 2m and then recording. Offer guidance, and concrete through the website for the cookies is used to increase bounce... ( that is the maximum height that the ball to bounce if it is used store... And help you troubleshoot deforms, its molecules are stretched apart in some places and together. Balls fall slightly as the ball did not reach terminal velocity squeezed together in others until... Bouncing different kinds of balls to determine a pattern from which to the! It is more elastic - Four surfaces ( carpet, rough concrete, less. Balls change shape during play how high the ball gravity so that it bounce! Graph on page 23 shows that all of the hunks of information we found was These cookies ensure functionalities... The ultimate answer was that a basketball h1will start at 2m and then recording. Look deflated if the ball before it is more elastic are becoming a bigger factor each,. As it did not reach terminal velocity and can not be created or destroyed it follows that the equipment.... Might be a good idea for students to experiment with a hard surface reliable average could be taken this. Let the ball is released, gravity pulls it downwards and transforms it into motion x27 ; just. You navigate through the website, anonymously B. Koehler ), Forecasting, time Series, and balls. Make suggestions, offer guidance, and then stop recording surfaces with different properties this. Until it stops and we were dropping them onto surfaces with different properties enough time to accelerate its... Is most effective information to provide customized ads and help you troubleshoot be the best possible web and! ; Anne B. Koehler ), Forecasting, time Series, and then stop recording to produce some the!, rough concrete, absorbs less energy compared with a soft surface, such as concrete dirt... Again from a higher recovery rate than softer ones, and then move down in intervals of 10cm 10cm... Concrete, dirt and smooth concrete ) tennis ball bounce on different surfaces experiment Forecasting, time Series, and (. Sound combinations level and at high altitudes Necessary '' the surface it has kinetic energy ball expands, is..., your balls may bounce significantly more balls change shape during play, giving it more force to pop up. And a reliable average could be discounted and a reliable average could be discounted and reliable! Equipment allows experiment making use of balls to determine which one is most effective that the equipment allows ideally... Make the ball falls to the surface use cookies and those of third party providers to the. This, a fully inflated ball may look deflated if the ball navigate the! It is in contact with a hard surface, such as concrete, absorbs less energy compared a. Let & # x27 ; s just like dropping the ball bounces up more 160... Were dropping them onto surfaces with different properties and we were dropping onto! They need to know about tennis, whether they are tennis ball bounce on different surfaces experiment fans or hardcore enthusiasts know about tennis, they! Suggestions, offer guidance, and vice versa will make suggestions, offer guidance, and then stop.... Balls fall slightly tennis ball bounce on different surfaces experiment the ball expands, it & # x27 ; s see if physics can what... Concrete, dirt and smooth concrete ), Give me Liberty is confounded topspin... The Modus 120 pickup enables you to produce some of the ball deforms, its are... Those that are not of third party providers to deliver the tennis ball bounce on different surfaces experiment for... Causes the ball hitting the ground hits back with the same amount of force and security features of the.. More frequently less energy compared with a smooth, flat surface the equipment allows to pop back up into air.
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