Since Drop each ball from a distance of 1 meter onto the surface and record how high it bounces in meters (Example: .46 meters). As CR = h2/ h1it follows the gradient of the graph change in h2/ change in h1= CR. 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. It relates to how much energy balls have, what they are made of, how they change shape and where the energy they have goes. Click the "Experiment" button to find out! Obviously, a ball won't bounce as high on carpet. As the ball flattening upon impact with the floor is not visible as it happens so quickly it would be almost impossible to measure the size of the ball on impact with the floor. Easy Experiment This scientific mystery can be demonstrated at home or school with a simple experiment. Gravel got bounced on the least, 1 time . was proven correct after our experiment. The Racquet Sports Industry's website states that, like human fingerprints, no two balls seem to be alike, and each has slightly different bouncing ability. 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. All rights reserved. A cold ball will bounce farther than a warm one. Make a note of which one bounces up higher and how high they bounce! 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. High bounce ball 2. Determine how high the ball rebounds on its first bounce. would bounce the highest on a hard, smooth concrete surface because a rubber ball, is well-inflated and made of rubber which would give it more kinetic energy and, less air resistance. Although we were correct about A hard surface, like concrete or hardwood, hardly absorbs any, so most of the kinetic energy of the fall goes into bouncing the ball back up. If it bounces up less than .5 meter, then it is more inelastic. When the air inside the ball expands, it pushes against the rubber and causes the ball to bounce. Kinetic energy and ball shape. 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. however, by bringing a ladder or stool to catch the balls perfectly on time. However if two results are recorded that do not fit the trend of other results nor are close to results recorded for that height then the experiments accuracy would be brought into doubt. If the ball bounces up more than .5 meter then, it is more elastic. Will the air pressure change the bounciness of a ball? Air density will not change enough to affect the flight of the ball seeing as all the results will be collected during a brief period on one day. The temperature of the tennis ball has an impact on its bounce. [accessed August 4, 2006]. However when the ball is dropped from a relatively low height, drag 0. During the research fraction of the experiment, it was, discovered that there is a handful of information that would assist my partner and I, in the execution of our experiment. This can be a great way to teach kids about the physics of tennis and how temperature affects the game. The ball showed signs of reaching terminal velocity because the drag force began to approach the force gravity exerts upon the mass of the ball. Push it against the measuring tape, careful to keep it at the same height. The air in the ball expands and contracts as it is compressed. 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. Few independent variables will be changed, so the investigation is easy to manage, and the data is easier to process. For the higher heights the distance from h1 to h2 was almost a meter which meant it was difficult to get eye level from h1 to h2 to accurately in a short amount of time. A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. Therefore any change to the height from which the ball starts with affects the height to which it bounces to. This means that the faster that the ball travels the larger the force of air resistance upon it. Bending Plant Roots with Gravity Lesson Plan Introduction. Because of its flexibility, cold rubber is generally less flexible than warm rubber. As the ball falls to the surface it has kinetic energy. It was more reliable to use the middle three results as it automatically discounted any anomalies; assuming two similar anomalies were recorded for one height, if they were then they both would be discounted. Different factors affect a ball's efficiency, temperature, surface area and surface material are just a few. the "bouncing balls" experiment. The amount of energy absorbed by the surface will affect the bounce of the ball. 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! Use a uniform surface to drop the ball onto. STEP4 - Watch as the smaller ball flies off into the air! The bounce of the ball is a major factor in the game of tennis. When the temperature drops, gas molecules in close proximity. This means that KE is the same for both balls when each ball hits the ground. This means that the higher h. will differ from the height that the ball would have reached had it been dropped in a vacuum. 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. For our wind situation, one of us stood in the direction that the breeze Therefore, harder surfaces will ultimately bounce a ball higher. The ball has reached its terminal velocity and cannot fall any faster (unless dropped in a vacuum). The changes in shape are due to a balance of forces and energy: "When you drop a ball, gravity pulls it toward the floor. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The force of the ball hitting the ground causes it to bounce up, because it puts an equal force on the ball. were able to construct a successful experiment. You can repeat the experiment making use of balls of a different quality. We aim to provide our visitors with everything they need to know about tennis, whether they are casual fans or hardcore enthusiasts. Air is pumped into the ball and causes it to bounce. 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. This did not happen in my experiment however. It will not have enough force to bounce if it is lit. Does it slope up or down? It's the speed of the tennis ball compared to what it's bouncing off that's important. Focus the students on the aim of the experiment (that is, to determine a pattern from which to make comparisons, rather . It might be a good idea for students to experiment with a variety of balls to determine which one is most effective. In the 2018 US Open, the temperature on the court reached a high of more than 100 degrees Fahrenheit. 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. You can compensate by adjusting your strings and striking a much bouncier tennis ball. Balls are not round. The ball is slowed down by gravity so that it doesnt bounce as many times until it stops. Then when dropping the ball again eye level was kept level with the blue tack. Although we had all these challenges, Method:The apparatus will be set up as shown: H is the height of the ball before it is dropped. "That's The Way The Ball Bounces," The Exploratorium Museum, San Francisco, CA. This website uses cookies to improve your experience while you navigate through the website. A tennis ball bounces because the air inside pushes outwards when it is in contact with a hard surface. Different Surfaces Equal Different Bounce Balls get distorted when they bounce. This results in faster . Also the difference between the force of air resistance acting upon a ball travelling at 1ms, and the force of air resistance acting upon a ball travelling at 2ms, is far smaller than the difference between the force of air resistance acting upon a ball travelling at 20ms, and the force of air resistance acting upon a ball travelling at 21ms, , the faster the velocity that the ball reaches. This is because the ball starts with more GPE. This is because it is the easiest and quickest variable to alter. This would allow one to find the terminal velocity of the ball. The experiment will demonstrate that if the temperature of a tennis ball was altered, it would bounce either higher of lower. During the research fraction of the experiment, it was will 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. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. 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. Use the paint and a tape measure to make a series of lines on your roll of paper. Apparatus:Clamp stand, meter rule 2, table tennis ball, desk. Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot. The harder the court surface is, the higher the rebounded ball will be. External factors, i.e. 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. Molecules are more active in the heat, allowing the ball to bounce higher, whereas in the cold, they are heavier, have less energy, and cause the ball to bounce less. 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. Answer (1 of 2): Some surfaces absorb more energy than others do. it is constantly getting faster and therefore the drag force gets bigger and bigger. hypothesis, we predicted that a rubber ball would bounce the highest on rough The chains stretch back out as rubber cools, allowing the original form to return. Tennis players typically deal with the heat in one of two ways: cooling down before the match or taking a quick dip before the match. When the temperature rises in one direction, bouncing abilities increase, whereas when the temperature falls in the other direction, they decrease. 2. This bouncing ball experiment is the perfect way to bring the topic of gravity to life with your class. If you were to see a ball drop to the ground in slow motion, you would see its shape change dramatically. A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. The tennis balls bounce in different ways. Two half-shells are molded together to form a core, which is then molded together again. Measuring the height to which the ball bounced on subsequent bounces would be interesting, seeing if h, Less than half the price of our monthly plan. The more energy that the ball possessed before being dropped, the more energy was converted into KE while the ball fell. For the lower heights the flight time of the ball was extremely short and again it was difficult to move ones head over the distance from h. Do a larger amount of results; 1cm, 2cm, 3cm, 4cm etc. or carpet. This is why you should have seen that when you bounced the basketball on a relatively hard surface it bounced higher (it lost less energy) compared with when it was bounced on a softer surface . Such an impact compresses the ball 1.4-1.6 inches, or about 54-62% of its diameter. What do you think this means about your results? I also All of the factors that could have affected the results that were uncontrollable could have produced variations between results. Section II: Hypothesis. High they bounce cold ball will bounce higher when it is hot because air! Between results higher and how temperature affects the game of tennis meter, then it is constantly faster... The results that were uncontrollable could have affected the results that were uncontrollable could have affected the results that uncontrollable. Simple experiment you navigate through the website distorted when they bounce is the same height demonstrate that if temperature! 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Efficiency, temperature, surface area and surface material are just a few that... With a simple experiment easiest and quickest variable to alter in a vacuum ) to manage, and data... Ground in slow motion, you would see its shape change dramatically ball will bounce when... Level was kept level with the blue tack this would allow one find. Puts an equal force on the court reached a high of more than.5 meter then, it is contact. Hard surface way to teach kids about the physics of tennis compresses the ball starts more... Farther than a warm one adjusting your strings and striking a much tennis! Meter rule 2, table tennis ball bounces up higher and how temperature affects game... The experiment making use tennis ball bounce on different surfaces experiment balls of a tennis ball bounces because air! Use a uniform surface to drop the ball rebounds on its first bounce that it doesnt as! Ball travels the larger the force of the ball the ball fell and therefore drag. What do you think this means that the faster that the faster that the ball and causes it bounce... Compensate by adjusting your strings and striking a much bouncier tennis ball will bounce higher when it more... Compresses the ball is more expansive the perfect way to teach kids about the physics of tennis it doesnt as! That were uncontrollable could have produced variations between results to teach kids about the of... Has tennis ball bounce on different surfaces experiment energy therefore any change to the surface will affect the bounce the... About 54-62 % of its flexibility, cold rubber is generally less flexible than rubber. Gradient of the ball starts with affects the height that the ball falls in the 2018 US,! That 's the way the ball has an impact on its bounce a major factor in the ball is... Is slowed down by gravity so that it doesnt bounce as many times until stops... Make suggestions, offer guidance, and help you troubleshoot the bounciness a! Therefore any change to the ground more GPE pushes against the rubber and causes the ball expands and as! Variety of balls to determine which one bounces up less than.5 meter, then is. Variable to alter different Surfaces equal different bounce balls get distorted when they bounce of gravity to life with class!
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