In this experiment, one will place the tennis ball at room temperature, freezing temperature, hot temperature, and cold temperature. Tennis balls bounce due to 3 factors which all work seamlessly together: 1. Do you have specific questions about your science project? Therefore, The temperature of the tennis ball has an impact on its bounce. Trying to figure out different things about any item, in my case bouncing balls and observing their heights. Calculating the coefficient to restitution of ball hitting the floor: The coefficient to restitution can be found out from a graph of h1against h2. Gather 15 to 20 tennis balls and a measuring tape. At 2ft, the basketball bounced 15 inches, the tennis ball bounced 12 inches, and the golf. however, by bringing a ladder or stool to catch the balls perfectly on time. A glass ball will bounce higher than a rubber ball if it doesnt break. It will not bounce to high if it is heavy. didn't catch the ball on time before it went back down to the ground, we would get The tennis balls bounce in different ways. One of the hunks of information we found was Five repeats were done as it was deemed that an average of the middle three was reasonably accurate. This is why it h2will be from the bottom of the ball as it hits the floor to the bottom of the ball at the top of its arc after bouncing. First, you will need to draw the background for your experiment, which will act as a large ruler for measuring your bounces on video. If the coefficient to restitution = 0.7, a ball dropping from h, in a vacuum would reach the height of 0.7 h, As velocity increases air resistance increases in proportion to the square of the velocity. In this experiment you will use a ball filled with air. This is because the ball starts with more GPE. would bounce the highest on a hard, smooth concrete surface because a rubber ball High-powered hitters benefit from having a hard court because the ball reboundes more quickly and allows them to hit long shots more easily. Graph 1. It shows that heights were recorded that exceeded the height that the ball would have reached had it been dropped in a vacuum. The balls finish up with the same amount of energy and the only energy given out is thermal energy. This would provide evidence on how the height from which the ball is dropped from affects the height to which it bounces without air resistance. In this paper, the dynamics of a bouncing ball is described for several common ball types having different bounce characteristics. Keep your balls warm in order to get the best bounce possible. No balls will be allowed to roll around upon the floor creating possible tripping hazards, Safety spectacles will be worn at all times, Clamp stand, meter rule 2, table tennis ball, desk. You also have the option to opt-out of these cookies. Based on the density and temperature of the tennis ball, scientists have discovered how it bounces. Changes in air pressure could have affected results as could changes in temperature however changes in these two factors would have been small; air pressure would not have changed enough to affect the results in the hour period in which the experiment was conducted, and although the rooms temperature may have increased by a degree or two, due to body heat, over the course of the period temperature was not a major factor that affected the height to which the ball bounced and would not have significantly affected the results. measured the heights. But how does concrete . What was the outcome? This can be explained by two factors. To compensate, swing to a much bouncier tennis ball and adjust your strings. This is because the higher the starting height of the ball, the higher the ball's potential energy. A cold tennis ball will not bounce as high because the air inside the ball is not as expansive. Although we had all these challenges, B. Because of the pressure inside the tennis ball, it is how high the ball will bounce in terms of altitude. During the preliminary experiment it was established that time was not an important factor that had to be taken into account when deciding how many different heights to drop the ball from and the interval between those heights. 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. An alternative method would be the measuring person holding a video camera level with the approximate height that the ball reaches after bouncing and videoing the ball reach the top of its arc. Cold balls tend to have a bouncier texture. The game can be played on various surfaces, including grass, clay, and concrete. My partner and Is experiment which surface bounces a ball the highest? A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. Hypothesis: if different balls are bounced on different surfaces, then a rubber ball Then when dropping the ball again eye level will be kept level with the blue tack thus avoiding parallax errors. Explanation: When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. The data from the experiment shows that the weight of the ball is important when bouncing. Balls bounce in ways that are affected by gravity. 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. The spin can help the ball to bounce higher or lower, depending on how it is hit. The colder the temperature, the less likely it is that the ball will bounce. 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 . I used a Flexible measuring tape to measure what the height was. Because of its flexibility, cold rubber is generally less flexible than warm rubber. STEP4 - Watch as the smaller ball flies off into the air! This means that the higher h1the more h2will differ from the height that the ball would have reached had it been dropped in a vacuum. Two half-shells are molded together to form a core, which is then molded together again. Why do balls bounce higher on different surfaces? A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. For our wind situation, one of us stood in the direction that the breeze After your partner starts recording, hold your arms out and drop the ball from the same height each time. The maximum and minimum results were included when working out the variation between results however, seeing as the maximum and minimum results were produced by the experiment and are therefore part of the variation between results produced by the experiment. The height of a balls bounce is affected by its material properties, as well as other factors. h2= The distance between the bottom of the ball at the top of its arc after bouncing and the ground. if different balls are bounced on different surfaces, then a rubber ball, hen a ball hits a surface, all its kinetic energy has to go somewhere. Use a uniform surface to drop the ball onto. The higher the ball is, the more it will bounce when you warm it up in cold weather. If the mass of the ball is heavier the weight is heavier (weight = mg) and downward force acting upon the ball is greater as well. The material ball is made from will affect the ball as if it is smooth then the drag will be significantly less than if it is rough. One way to measure the amount of air that is in a ball is with an air pressure gauge. Then they would be dropped from a table, and the height would be measured. Let's see if physics can explain what happens. Also it shows inaccuracies in the experiment as it shows that heights were recorded that exceeded the height that the ball would have reached had it been dropped in a vacuum. the higher it popped up into the air. Concrete4. This is because the ball starts with more GPE. The ball is dropped from a known height and the time of each bounce is measured. experiment. A lot of What affects ball bounce? Take your class outside, to an area with a smooth, flat surface. Using this experiment, we will attempt to determine whether the temperature of an object has an effect on its behavior. Floor BoardsEach of the drops was performed 5 times to get an accurate Reading and Average.In this experiment this shown what types of surfaces absorb a lot of the dispersed energy and the surface and which ones do not do it as well.This was done on iMovie and took 2 Hours to Create.So Please Enjoy! The weight and material of the ball will be kept the same throughout the experiment by using the same ball. The first independent variable that will be tested. When printing this document, you may NOT modify it in any way. Balls bounce up to 5 . A tennis ball temperature science experiment can be a great way for kids to learn about the science behind the game of tennis. Place the tape measurer against the edge of a wall using the bluetack 3. Overview: 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. If you want to make the ball bounce lower, you can try cooling it down by putting it in the fridge or freezer for a few minutes. We also use third-party cookies that help us analyze and understand how you use this website. There is a chance that you will bounce. It should be tall enough to hang up behind your ladder, about 5feet tall. 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High bounce ball 2. Leave the tennis balls in place for at least one to three hours, if possible. Therefore the results are valid. However when the ball is dropped from a relatively low height, drag 0. Use the pressure gauge to release some of the air pressure from the ball. The purpose of the experiment is to determine if tennis balls behave differently based on the weather and the length of time since the can of balls was opened. We did this by bouncing different types of balls Two different types of balls, Penn Championship and Non-Championship will be compared. This means it will be travelling the same speed when it hits the ground. Therefore the energy that the ball hits the floor with = mh, The proportion of energy lost when ball hits the floor = The Coefficient to the restitution of the two objects (C, All of the energy that the ball leaves the floor with is converted back into GPE, If dropping a ball in a vacuum all you need to know in order to know how high the ball will bounce to is h, can be found out by looking at a graph, the gradient, as a percentage of 1 gives the amount of energy conserved and therefore C. The clamp stand will be clamped down to the desk using a g-clamp to prevent it falling over and causing possible injuries. When the ball hits the ground,the ground hits back with the same amount of force. Equipment/materials used: We, chose balls and surfaces with different hardnesses, textures and compositions in, order to give a fair experiment. The harder the court surface is, the higher the rebounded ball will be. It will not have enough force to bounce if it is lit. Friday - 25/04/14 Concrete will help bounce a ball the highest as it's hard and, My partner and Is experiment which surface bounces a ball the highest?, consisted of us randomly selecting different balls along with different surfaces. These inaccuracies could have been caused by external factors or parallax error even though efforts were made to avoid parallax error occurring - by dropping the ball one time that was not measured and placing a blob of blue tack onto the meter rule at the approximate height it bounced to. Why does a tennis ball bounce higher on concrete? A measuring stick/ruler marked in centimetres; long enough to record the highest ball bounce. Some balls to try are: soccer, basketball, volleyball, golf, tennis, or handball. small balls sometimes, but we could have improved this by taking many attempts To determine how high a tennis ball will bounce when dropped from a . In modern tennis, the differences and subtleties of each surface tend to disappear. Method:The apparatus will be set up as shown: H is the height of the ball before it is dropped. Try bouncing different kinds of balls to test this question. The effect of surface on the bounce height of a tennis ball. Science Buddies Staff. Results are presented for a tennis ball, a . to find out which surface bounces a ball the highest. Find an outdoor wall where you can hang up your background, set up a ladder, and film your experiment. . How Much Do Air Jordan Tennis Shoes Cost? The balls bounced higher on the concrete Let the ball bounce until it stops, and then stop recording. The procedure allowed me to observe the affects of the height from which a table tennis ball was dropped from upon the height to which it bounced. Therefore, harder surfaces will ultimately bounce a ball higher. When printing this document, you may NOT modify it in any way. Also the ball flattening upon impact doesnt have to be taken into account whereas if one was measuring from the top of the ball as it hits the floor to the top of the ball before dropping it or at the top of its arc after bouncing or the middle of the ball as it hits the ground to the middle of the ball before dropping it or the middle of the ball at the top of its bounce then the fact that the ball flattens momentarily on impact with the floor would have to be taken into account. Also the mass of the ball affects the chances of the ball reaching its terminal velocity. When the temperature rises in one direction, bouncing abilities increase, whereas when the temperature falls in the other direction, they decrease. To find out what affects the height to which a ball bounces. Obviously, a ball won't bounce as high on carpet. When the air inside the ball expands, it pushes against the rubber and causes the ball to bounce. Anyone, regardless of age or ability, can take part in tennis on a court with a ball. It is important to let the ball fall out of your hands, and not to push it down with your hands, wrists, or arms. The amount of energy absorbed by the surface will affect the bounce of the ball. When the temperature rises above 90 degrees, it becomes extremely dangerous to play tennis outside. What do you think this means about your results? was blowing in, so that if the balls were blown away, they would come straight to This would allow one to find the terminal velocity of the ball. are from the bottom of the ball as it hits the floor to the bottom of the ball at the top of its arc after bouncing. The ultimate answer was that a basketball H is the height of the ball before it is dropped. The approach was to place 3 tennis balls in 4 different environments with different temperatures. When a tennis ball is on the court, the bounces are heavily influenced by the environment. This is why it. These two results were excluded when averages were being calculated and therefore the average variation between results used for calculating the average was even less than 3cm. The balls were dropped from 100 inches onto the granite surface and bounced between 52.93 and 58.43 inches. The energy goes into deforming the ball-- from its original round shape to a squashed shape. This will mean that I will have to have the interval between the different heights from which the ball is dropped from less than 20cm, probably at 10cm. This is impossible. Try the experiment again, but this time change how high the ball is dropped instead of the air pressure of the ball. The balls dropped from 75 centimeters will bounce higher than those dropped from 50 centimeters, and the balls in the 50 centimeter trials will bounce higher than those in the 25 centimeter trials. From this it can be seen that using the average of the middle three results is more accurate than using the average of all five, as it automatically discounts most anomalies. We On a grass tennis court, e y varies from about 0.6 to 0.75 depending on the length of the grass and the softness of the underlying soil. The clay surface slows the ball down more than the grass of Wimbledon, allowing Nadal to use his forehand to his advantage. This would eliminate parallax error further. STEP1 - For comparison first hold the football and smaller ball in each hand and drop them from the same height. Some of the kinetic energy of the ball is lost during the collision with the floor and the ball will not return to the original height. This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. The more KE that the ball possessed as it hit the floor, the more that was transferred into elastic potential energy and back into KE. 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