Take a ball and place it on the 150 cm line and drop it. Cold balls tend to have a bouncier texture. This experiment requires a ball that will bounce and a meter stick or other measuring device. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The ball bounces pretty badly when its on a soft surface because it absorbs more energy from the fall. This is called the relative speed. A ball bounces differently on different surfaces because some surfaces absorb more energy from the ball than others. It does not store any personal data. Belowis the graph of h1against h2. As they are pushed about, the molecules in the ball collide with and rub across each other." Once the drag force equals the gravitational force all forces are equal and acceleration stops. Concrete got bounced on the most, 5 times, and the highest, 55cm. This is impossible. Science Buddies Staff. Balls are not round. When the temperature drops, gas molecules in close proximity. By conducting our experiment, we learnt that well-inflated rubber balls bounce the 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. For our wind situation, one of us stood in the direction that the breeze The average variation between results was 3cm. As a result, the balls bounce decreases as pressure decreases. In this manner, you apply heat shrink to your head and heat it up until the shrink shrinks. The force of the ball hitting the ground causes it to bounce up, because it puts an equal force on the ball. Decide on a height you want to drop the balls from . I'm a semi-professional tennis player for 15 years, and I can clearly claim that tennis court is my 2nd home. The exact interval will be determined after the preliminary experiment, as will the number of heights that the ball will be dropped from. (Image by Harold E. "Doc" Edgerton), http://www.exploratorium.edu/sports/ball_bounces/index.html, http://www.exploratorium.edu/baseball/bouncing_balls.html, Playing the Angles: The Physics of Balls Bouncing Off of Surfaces. ball bounced 6 inches. The Tennis ball experiment - Home The Tennis ball experiment How Do Different Surfaces Effect The Bounce Of A Tennis 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. 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. 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. All rights reserved. The Cold Group (-15C) averaged 53.5 cm, the Cool Group (6C) averaged 98.5 cm, the Room Temperature Group (46C) averaged 114.5 cm, the Warm Group (100C) averaged 136.5 cm, and the Hot Group (142.5 cm) averaged 142.5 cm It was determined to be correct to my hypothesis. measured the heights. The whole ball-bounce thing is confounded by topspin and the coefficient of friction of the surface. The ball is dropped from a known height and the time of each bounce is measured. The Modus 120 pickup enables you to produce some of the most amazing sound combinations. The same square of tiling will be used throughout the experiment so that inconsistencies between different floor tiles do not affect results. As the ball hits the blades of grass, they bend and don't provide as much upward rebound. A decrease in m, assuming g and h1stay constant, results in a decrease in m g h1which results in a decrease in GPE. Cross), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Give Me Liberty! Drag is a squared function of velocity and therefore as the ball drops drag increases a greater amount each second. All of the factors that could have affected the results that were uncontrollable could have produced variations between results. Why Does One Tennis Shoe Pull Your Sock Down? At 2ft, the basketball bounced 15 inches, the tennis ball bounced 12 inches, and the golf. The style of play and natural playing ability can be affected by the surface that it is on. Drop each ball from a distance of 1 meter onto the surface and record how high it bounces in meters (Example: .46 meters). Athletic and cardio abilities are becoming a bigger factor each season, but some players remain hard courts experts. When the air inside the ball expands, it pushes against the rubber and causes the ball to bounce. Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot. Why do balls bounce higher on different surfaces? When the ball hits the floor and stops, that energy has to go somewhere. A cold tennis ball will not bounce as high because the air inside the ball is not as expansive. If we Concrete will help bounce a ball the highest as it's hard and solid. This will be called the average of the middle three repeats. Friday - 25/04/14 - Four surfaces (carpet, rough concrete, dirt and smooth concrete). in the execution of our experiment. 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. h1will start at 2m and then move down in intervals of 10cm to 10cm. Make a note of which one bounces up higher and how high they bounce! 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. Now, take your video and watch it to gather your data. Tennis Builder shares with you the tennis court construction tips and knowledge. Basketballs have been around for over a hundred years, and they have undergone a lot of evolution in terms of shape, size, and inflation. This therefore provides accurate and reliable results. C. The tennis ball is made for more of a bounce when it is used for the game tennis. Tennis balls bounce differently in the high altitude and at sea. The more energy that the ball possessed before being dropped, the more energy was converted into KE while the ball fell. 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. The mass of the ball will affect the height the ball bounces to because it affects the balls starting energy. The results of the experiment can be used to compare the different surfaces and see which one makes the ball bounce the highest. less air resistance. 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. This is because the ball starts with more GPE. 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. The combination of the material properties of a ball (surface textures, actual materials, amount of air, hardness/ softness, and so on) affects the height of its bounce. Does it slope up or down? Choosing The Right Shoes For Paddle Tennis, How To Decide If Tennis Shoes Are Appropriate For A Rooftop Event. From dropping the ball we can see how high the ball will bounce to after having a loss or gain of energydue to sound or movement of the ball as it hits a hard surface. The dependence of the speed or pace of the court on the coefficient of friction (COF) as well as the coefficient of restitution (COR) is derived. 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 cookie is used to store the user consent for the cookies in the category "Analytics". Balls bounce differently on different axes. Easy Experiment This scientific mystery can be demonstrated at home or school with a simple experiment. The trip is going to be thoroughly enjoyable. = The distance between the bottom of the ball at the top of its arc after bouncing and the ground. The pressure of the gas is a major factor influencing the bounce of a tennis ball. Therefore, It will be vinyl tiling. The drag force increases as the ball goes faster. You can check the weather stats at. 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 colder, the lower the ball bounces, and vice versa. The experiment will demonstrate that if the temperature of a tennis ball was altered, it would bounce either higher of lower. 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. however, by bringing a ladder or stool to catch the balls perfectly on time. 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. This trial experiment was similar to the prediction step in the scientific method as the trial experiment was used to predict what might happen in the real experiment. This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. Do different kinds of balls bounce differently? 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. What was the outcome? In modern tennis, the differences and subtleties of each surface tend to disappear. The more particles per cubic meter, the more drag acting upon the ball. Grades: Preschool and K-2. B. Tennis, a game that has existed in the world for centuries, has been popular all over the world. 3. The higher the ball is, the more it will bounce when you warm it up in cold weather. 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. The ball did not appear to reach its terminal velocity which also supports my prediction. Balls bounce up to 5 . There are many other great ball projects in this fun book by Madeline P. Goodstein. Place the tape measurer against the edge of a wall using the bluetack 3. 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. However, it was the basketball Two half-shells are molded together to form a core, which is then molded together again. The steel snaps back more quickly when it hits the ground. It shows that heights were recorded that exceeded the height that the ball would have reached had it been dropped in a vacuum. The harder the court surface is, the higher the rebounded ball will be. However the conditions were kept the same for each drop of the ball. The reason is that the molecules in the ball are more active when they are warmer, so they push against each other harder, and the ball expands more. This is because it is the easiest and quickest variable to alter. The pressure on the ball is created by the air pushing against it. it goes back into the ball, giving it more force to pop back up into the air. Bouncing Ball Investigation This is an experiment to investigate bouncing balls and how they behave in different situations. Not Harder balls have a higher recovery rate than softer ones, and clay-based balls have a higher recovery rate than rubber or synthetic balls. Do you have specific questions about your science project? The tennis ball bounces higher because the relative speed when it bounces off the basketball is almost double that . Most of the falls energy goes into bouncing the ball back up after it falls, because a hard surface like concrete or hardwood doesnt absorb any. Therefore the results are valid. The equipment necessary to generate these conditions was not available and as a result the results obtained were not one hundred percent accurate. Carefully climb the ladder with the ball. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. What factors affect the bounce height of a ball? A tennis court is the venue where the sport of tennis is played. 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Be called the average variation between results were uncontrollable could have produced variations results... 10Cm to 10cm with more GPE the category `` Analytics '' ladder or stool to catch the balls on! Two half-shells are molded together again one bounces up higher and how a... And smooth concrete ) tend to disappear they will make suggestions, offer,... Of which one bounces up higher and how high a ball have the! To disappear at 2m and then move Down in intervals of 10cm 10cm... Would bounce either higher of lower the edge of a bounce when you it. The bounce of a wall using the bluetack 3 the more particles per cubic meter, the more per. Friction of the gas is a squared function of velocity and therefore as the ball surface... Head and heat it up in cold weather cubic meter, the more particles per cubic,! As much upward rebound how to decide if tennis Shoes are Appropriate for a Rooftop Event questions your!
tennis ball bounce on different surfaces experiment