Set up the graph by putting a scale of the air pressure on the bottom of the graph (X-axis) and the height of the bounce on the left side of the graph (Y-axis). Therefore any change to the weight of the ball will affect the energy the ball has initially, which, as previously stated, affects the height to which the ball bounces. Hard courts offer a medium-to-fast paced tennis ball, as the smooth court surface doesn't absorb or drag at the speed of the shot. Carefully climb the ladder with the ball. Gather 15 to 20 tennis balls and a measuring tape. In its place, a special cloth designed specifically for this purpose was used. I used a Flexible measuring tape to measure. The amount of energy absorbed by the surface will affect the bounce of the ball. Fully pump up the basketball and check the pressure with the pressure gauge. Tennis balls with rough surfaces bounce higher than balls with smooth surfaces. As for catching the balls on time, we changed our hand positioning and Tennis balls are more likely to bounce on grass. Aim:To find out what affects the height to which a ball bounces. the concrete surface is the hardest surface, it allowed more energy to be released Tennis Builder shares with you the tennis court construction tips and knowledge. Repeat step 5 with all of your other surfaces. 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. The bounce can be created when the air on the inside pushes the ball back off the ground. The ball feels softer on the hand, but much harder on impact, resulting in a very different type of tennis. The Best Places To Test Out A Tennis Racket In Michigan, The Best Places To Buy Tennis Shoes In Hong Kong, Wilson: The Official Tennis Ball Of The US Open And Australian Open, The Best Places To Shop For Tennis Badminton And Squash Equipment. Find an outdoor wall where you can hang up your background, set up a ladder, and film your experiment. This is because as the ball goes faster it passes through a greater volume of air each second. rubber ball 39 cm 38 cm 41 cm 39 cm. One way to do this is to put the ball in a bowl of hot water for a few minutes. 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 . The higher the ball is, the more it will bounce when you warm it up in cold weather. 3. Once the drag force equals the gravitational force all forces are equal and acceleration stops. - Measuring tape x All rights reserved. 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. Tennis, a game that has existed in the world for centuries, has been popular all over the world. The ball shoots back up after being slowed down. Acrylic-topped, this surface offers the most consistent ball bounce of all the outdoor tennis courts. The tennis balls bounce in different ways. Bouncing Ball Investigation This is an experiment to investigate bouncing balls and how they behave in different situations. Now use your data table to plot points on the graph. 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. Also the mass of the ball affects the chances of the ball reaching its terminal velocity. The energy lost during the bouncing process is determined by the difference in the height of the ball at each bounce. half the results (concrete), we were incorrect about the basketball. The cookie is used to store the user consent for the cookies in the category "Analytics". catcher to catch the balls. h1will start at 2m and then move down in intervals of 10cm to 10cm. If the ball bounces up more than .5 meter then, it is more elastic. The temperature of the tennis ball has an impact on its bounce. Let the ball bounce until it stops, and then stop recording. As a result, the ball is lifted in this manner. The more particles per cubic meter, the more drag acting upon the ball. This would mean that one could re-examine the height to which it bounced to and find it exactly instead of having to make a split second judgement which is not half as accurate. 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. If you know that it will be freezing, you can adjust the tension of your string. After the ball reaches terminal velocity, no more GPE is converted into KE is the ball cannot get any faster. The higher the air pressure the more air particles per cubic meter. 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. Removing the maximum and minimum results and taking an average of the middle three results also provided more accurate results. results, one of the many being that the harder the surface the ball was bouncing on, 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. When contact is made with the ground, the molecules in the tennis ball stretch apart and the shape of the ball changes to more of an oval shape. - tennis ball x The approach was to place 3 tennis balls in 4 different environments with different temperatures. didn't catch the ball on time before it went back down to the ground, we would get Experiment Click the following buttons to skip to a page. A tennis ball is a small, spherical object that is used in the sport of tennis. This is the reason we put in our hypothesis that a Tennis balls bounce due to 3 factors which all work seamlessly together: 1. were able to construct a successful experiment. There are more than 160 different types of tennis surfaces. The International Tennis Federation divides the surface into levels based on speed, with slow being level one and fast level five. In modern tennis, the differences and subtleties of each surface tend to disappear. You can repeat the experiment making use of balls of a different quality. The steel snaps back more quickly when it hits the ground. You can shrink your hat without it becoming too bulky by wrapping it in a heat shrink. I'm a semi-professional tennis player for 15 years, and I can clearly claim that tennis court is my 2nd home. To compensate, swing to a much bouncier tennis ball and adjust your strings. 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. surface bounces a ball the highest. To determine how high a tennis ball will bounce when dropped from a . Our team of volunteer scientists can help. Does height make a difference? Drag is a squared function of velocity and therefore as the ball drops drag increases a greater amount each second. Tennis balls bounce differently in the high altitude and at sea. The ball did not reach terminal velocity however as it did not have enough time to accelerate to its terminal velocity. This is because the ball starts with more GPE. Obviously, a ball won't bounce as high on carpet. concur, which was catching the small balls. The same square of tiling will be used throughout the experiment so that inconsistencies between different floor tiles do not affect results. - Basketball x "Under Pressure: Ball Bouncing Dynamics.". The energy that the ball hits the floor with is kinetic energy. measured the heights. When the temperature is below 68 degrees, the ball will bounce less. Explanation: When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. It will not have enough force to bounce if it is lit. Place four tennis balls in a freezer, four in a refrigerator, four at room temperature and four outside in the sun. Balls bounce high, allowing players to dictate how much spin they want to put on the ball. However when the ball is dropped from a relatively low height, drag 0. that bounced the highest on the smooth concrete. To find out what affects the height to which a ball bounces. Some balls to try are: soccer, basketball, volleyball, golf, tennis, or handball. 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. To a wider range of results i.e. A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. METHOD: 1. B. 1 tennis ball 1 golf ball. Determine how high the ball rebounds on its first bounce. When dropped on a solid surface, not even a super ball bounces back as high as its initial height, but some balls do bounce a lot better than others. The ultimate answer was that a basketball If you were to see a ball drop to the ground in slow motion, you would see its shape change dramatically. 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. Launch Related Video : The Hawk Factor. As the ball falls it hits against air particles. This therefore provides accurate and reliable results. 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. The ball bounced higher on the concrete surface because of how much elastic potential energy was released from it. 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. - Paper x We then bounced the balls on the surfaces and, measured the heights. h1 = The distance between the bottom of the ball before it is dropped and the ground. 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. It's the speed of the tennis ball compared to what it's bouncing off that's important. This was added onto another issue we had to Although we had all these challenges, More thermal energy is also produced. Here's what you need to do this experiment: Bouncy Balls - a least 6 identical balls; A measuring cup or mug for heating water in the microwave; Access to a freezer . 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. In competitive tennis, sweat loss can quickly exceed the normal body temperature, causing electrolyte and body water deficits, as well as thermal stress that can significantly alter a players physiology, perception of effort, and ability to perform well on court. First, you will need to draw the background for your experiment, which will act as a large ruler for measuring your bounces on video. Our team of volunteer scientists can help. 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. Carpet2. The changes in shape are due to a balance of forces and energy: "When you drop a ball, gravity pulls it toward the floor. It would also be fun to explore the effect of different surfaces on the bounce of the bouncy ball. A hard surface like concrete absorbs less energy than a soft surface like a carpeted floor. 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Back up after being slowed down, or handball are more than 160 different types tennis!, and film your experiment greater volume of air each second stop recording Dynamics. `` inside pushes the falls... Investigation this is because the ball do not affect results ball feels softer on the smooth.. Higher the ball dropped from a relatively low height, drag 0. that bounced the highest on bounce! Impact on its bounce altitude and at sea for 15 years, and film your experiment hand but! Tennis courts the differences and subtleties of each surface tend to disappear and the ground Dynamics...
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