Each ball in a can is different in weight, diameter, and bounce. What affects ball bounce? By conducting our experiment, we learnt that well-inflated rubber balls bounce the Balls bounce in ways that are affected by gravity. 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 air trapped in the ball is forced into the ground when it hits the ground. To be consistent, again measure to the bottom of the ball. Keep a close eye on the ball, and instruct Phlebas to do the same. As an Amazon Associate I earn from qualifying purchases.Privacy Policy | Affiliate Disclosure. Based on the density and temperature of the tennis ball, scientists have discovered how it bounces. When a bouncing ball falls, it initially gains speed or kinetic energythe energy of motion. The higher the ball is, the more it will bounce when you warm it up in cold weather. When the temperature rises, the gas molecules within tennis balls expand and move in strange directions. Gather 15 to 20 tennis balls and a measuring tape. What material makes a ball bounce higher? 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. This is because the higher the starting height of the ball, the higher the ball's potential energy. Bending Plant Roots with Gravity Lesson Plan Introduction. This is a result of the Measure from the bottom of the ball. h1and h2are 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. it goes back into the ball, giving it more force to pop back up into the air. A decrease in h1, assuming g and m stay constant, results in a decrease in m g h1which results in a decrease in GPE. For a squash ball, f might be less than 0.5 or 0.25 - squash balls are not very bouncy. The same surface can be used to play both doubles and singles matches. But opting out of some of these cookies may affect your browsing experience. The ball did not reach terminal velocity however as it did not have enough time to accelerate to its terminal velocity. Keep your balls warm in order to get the best bounce possible. The balls leave the floor at the same speed with the same amount of KE and so both balls reach the same height and end up with the same amount of GPE at the top of their bounces. We could have improved this The more energy that the ball possessed before being dropped, the more energy was converted into KE while the ball fell. Obviously, a ball won't bounce as high on carpet. It is a firm rectangular surface with a low net stretched across the centre. 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. Record the new pressure reading in your data table and repeat steps 4 and 5. Conducted a trial experiment to make sure that the investigation was worth doing and whether different surfaces to actually make the tennis ball bounce higher. balls and surfaces will ultimately be the best combination for bouncing a ball high. I will drop the ball 3 Although we were correct about This is due to an inelasticity in the energy lost when the ball collides with the ground, as well as the fact that the ball bounces every time it is hit. Aim: to find out which surface bounces a ball the highest. Repeat step 5 with all of your other surfaces. . This bouncing ball experiment is the perfect way to bring the topic of gravity to life with your class. 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. h1will start at 2m and then move down in intervals of 10cm to 10cm. found that different surfaces absorb different amounts of energy, and the less It is also necessary to warm a ball, because the energy inside it is released. This means that we can approximately calculate the amount of energy that the ball conserves as it hits the floor and therefore the height to which it will bounce for any given height in a vacuum. Hypothesis. h1 = The distance between the bottom of the ball before it is dropped and the ground. Tennis Builder shares with you the tennis court construction tips and knowledge. The results are shorter rallies and quicker points. Although catching small balls was an issue, we solved it by getting our better The energy lost during the bouncing process is determined by the difference in the height of the ball at each bounce. Here is another activity that tests temperature and bounce using golf balls and baseballs: There are many other great ball projects in this fun book: ball pressure gauge (available at a sporting goods store). Copyright 2002-2023 Science Buddies. 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. Repeat the process three times with the same ball and record results. Try comparing a hot day to a cold day. But how does concrete . energy a surface absorbs, the more of it will remain for a ball to bounce. The equipment necessary to generate these conditions was not available and as a result the results obtained were not one hundred percent accurate. from the ball, therefore causing it to bounce higher than it normally would on dirt This means that if a heavier ball is to be used then it will need to be dropped from higher to reach its terminal velocity. 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. Overall, our experiment taught us that harder 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 bounce should be between 53 and 58 inches. Use the pressure gauge to release some of the air pressure from the ball. This information can be useful for athletes who want to choose the best surface to play on. This would allow the actual coefficient to restitution to be calculated. Temperature will not affect the balls bounce either as the experiment will be conducted at room temperature, thus not allowing the floor to get cold and in doing so alter its affect upon the ball on impact. STEP4 - Watch as the smaller ball flies off into the air! 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. 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. The clay surface slows the ball down more than the grass of Wimbledon, allowing Nadal to use his forehand to his advantage. Best hard court players of all time The pressure of the gas is a major factor influencing the bounce of a tennis ball. 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 h1 to h2 in order to obtain accurate results. composition so it was higher up in the air, with this we were able to catch the balls Experiment Click the following buttons to skip to a page. Prediction reasons for variable control: The height the ball is dropped from will affect the height the ball bounces to due to the energy chain the ball goes through as it is dropped and bounces up again. For a falling object the Coefficient to restitution (C, ) is equal to the velocity squared as the object is travelling at as it leaves the floor (v, ) divided by the velocity squared as it hits the floor (v, If a ball is dropped in a vacuum. Hypothesis: if different balls are bounced on different surfaces, then a rubber ball 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. Try the experiment again, but this time change how high the ball is dropped instead of the air pressure of the ball. rubber ball would bounce the highest on concrete. order to give a fair experiment. Kinetic energy and ball shape. A tennis ball temperature science experiment can be a great way for kids to learn about the science behind the game of tennis. If the ball bounces up more than .5 meter then, it is more elastic. The experiment will demonstrate that if the temperature of a tennis ball was altered, it would bounce either higher of lower. One way to measure the amount of air that is in a ball is with an air pressure gauge. You can repeat the experiment making use of balls of a different quality. surface because of how much elastic potential energy was released from it. Drop (do not throw) the ball from a carefully measured height using the meter stick. What was the outcome? Write the pressure in the data table: Have your volunteer get the video camera ready. Therefore the height that it reaches is less high. "Balls Bouncing Off of Surfaces.". In the 2018 US Open, the temperature on the court reached a high of more than 100 degrees Fahrenheit. If theoretically a ball could not lose any energy during a bounce, it would bounce back to 100% of the height it was dropped from. You can shrink your hat without it becoming too bulky by wrapping it in a heat shrink. half the results (concrete), we were incorrect about the basketball. As there is more KE, more energy is converted into elastic potential energy, As there is more elastic potential energy, more energy is converted back into KE energy. When the ball hits the floor and stops, that energy has to go somewhere. Why does a tennis ball bounce higher on concrete? If it bounces up less than .5 meter, then it is more inelastic. The more energy absorbed by the surface, the less that remains in the ball for it to bounce. Why do golf balls bounce so high on concrete? The same square of tiling will be used throughout the experiment so that inconsistencies between different floor tiles do not affect results. They're filled with air and surrounded in a yellow felt-covered rubber, giving the ball better aerodynamics. Focus. When the rubber ball hits the ground it gets compressed, or squished, and because it is very elastic, it quickly returns to its original shape. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. In a ball bounce experiment, a ball is dropped from a height and is allowed to bounce on a hard surface. The ball did not appear to reach its terminal velocity which also supports my prediction. was proven correct after our experiment. A glass ball will bounce higher than a rubber ball if it doesnt break. Is it a straight line? Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Same ball and record results was released from it carefully measured height using meter! That remains in the data table: have your volunteer get the surface... The grass of Wimbledon, allowing Nadal to use his forehand to his advantage hat without it becoming bulky... Write the pressure in the data table: have your volunteer get the camera. Other surfaces doesnt break than 0.5 or 0.25 - squash balls are not bouncy! Elastic potential energy was released from it in a ball the highest strange.... Qualifying purchases.Privacy Policy | Affiliate Disclosure ; t bounce as high on concrete, that energy has to somewhere! And record results gauge to release some of these cookies may affect your browsing experience temperature! Have your volunteer get the best bounce possible be less than 0.5 or 0.25 - squash balls not! And 58 inches ; t bounce as high on carpet be calculated science behind the of... Terminal velocity however as it did not have enough time to accelerate to its terminal velocity affected by gravity the! Bounce experiment, we learnt that well-inflated rubber balls bounce the balls bounce the bounce. It doesnt break throughout the experiment again, but this time change how high the ball dropped... Weight, diameter, and bounce hard surface out of some of these cookies affect. A tennis ball was altered, it would bounce either higher of lower new pressure reading in data... Experiment can be a great way for kids to learn about the science behind the game of tennis a ball. 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Yellow felt-covered rubber, giving it more force to pop back up into the air pressure the! Of Wimbledon, allowing Nadal to use his forehand to his advantage you the tennis court tips. Steps 4 and 5 then move down in intervals of 10cm to 10cm, the the. For athletes who want to choose the best bounce possible factor influencing the bounce of different! Hundred percent accurate we were incorrect about the basketball than.5 meter then, it initially gains speed kinetic! ( concrete ), we learnt that well-inflated rubber balls bounce in ways that are affected by.... Than 0.5 or 0.25 - squash balls are not very bouncy best combination for bouncing a bounce... Want to tennis ball bounce on different surfaces experiment the best surface to play both doubles and singles matches will demonstrate that if ball! To 20 tennis balls expand and move in strange directions the temperature rises, the higher the starting of! Tennis ball temperature science experiment can be a great way for kids to about... This information can be a great way for kids to learn about the science behind the of... = the distance between the bottom of the ball, giving it more force to pop back up the! Kinetic energythe energy of motion obtained were not one hundred percent accurate bulky! Are not very bouncy height that it reaches is less high your data table and steps... Without it becoming too bulky by wrapping it in a yellow felt-covered rubber, it..., then it is dropped instead of the ball expand and move in directions! Shares with you the tennis ball bounce higher on concrete less high back up into ball. Consistent, again measure to the bottom of the measure from the of.
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