15 inches, and the golf ball bounced 26 inches. Do you have specific questions about your science project? Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot. energy a surface absorbs, the more of it will remain for a ball to bounce. When the temperature of a tennis ball changes, it becomes more elastic and has an intriguing reaction with its gas-filled core. rubber ball would bounce the highest on concrete. Instead, as the ball is still always loosing GPE so long as it is still falling, all GPE is converted into thermal energy. This is why it. A cold tennis ball will not bounce as high because the air inside the ball is not as expansive. It therefore hits more air particles each second and so the force of drag is bigger the faster the ball goes. (2020, November 20). We aim to provide our visitors with everything they need to know about tennis, whether they are casual fans or hardcore enthusiasts. We also use third-party cookies that help us analyze and understand how you use this website. The tennis balls bounce in different ways. You also have the option to opt-out of these cookies. Tiles3. The bounce height was measured at a 90 degree viewing angle to the ruler to minimise parallax errors. Fully pump up the basketball and check the pressure with the pressure gauge. But opting out of some of these cookies may affect your browsing experience. This will be repeated five times, possibly more (for accuracy), for each height and the top and bottom results will be discounted. I used a Flexible measuring tape to measure. Not only does a ball distort its shape--so does the surface on which the ball bounces. 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. All rights reserved. This can be explained by two factors. In the heat, the molecules are more active, so the ball can bounce higher . Then they would be dropped from a table, and the height would be measured. Vacuum pump, rigid plastic cylinder, two large rubber bungs to fit over the two ends of the plastic cylinder, table tennis ball, Two meter stick rulers. This means that the faster that the ball travels the larger the force of air resistance upon it. 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. With this information, we What do you think this means about your results? Why do golf balls bounce so high on concrete? Concrete4. Experiment 2 is for testing the effect of air pressure. When the temperature is below 68 degrees, the ball will bounce less. Low-power hitters have a more difficult time bouncing the ball on clay courts, whereas high-power hitters have a better chance of bouncing the ball on hard courts due to the higher bounce. A totally accurate experiment would have a variation between results equal to zero however an experiment that is totally accurate needs to be conducted under conditions where air pressure and temperature remained constant, error produced by the ball falling on different parts of the linoleum floor tile (which was not totally even and thus produces inaccurate results) and human error removed by dropping the ball onto a uniform surface and using machinery to record the height to which the ball bounced to. 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. The ball exerts less pressure when it is at higher altitudes because of the lower air pressure. Use the paint and a tape measure to make a series of lines on your roll of paper. If you're playing under 68 degrees, it's a good idea to make sure the ball doesn't bounce too much. found that different surfaces absorb different amounts of energy, and the less You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. This is because the higher the starting height of the ball, the higher the ball's potential energy. (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. surface bounces a ball the highest. - Ping pong ball x If you string your racket 2 pounds lower in the winter, it will bounce more. The experiment was conducted as the method (below) states. The steel has a lot of bounce power due to its better storage of energy. The ball weighs exactly 2.5g. All of the factors that could have affected the results that were uncontrollable could have produced variations between results. It will not bounce to high if it is heavy. will differ from the height that the ball would have reached had it been dropped in a vacuum. Length of Lesson: 30 - 45 minutes. Steel balls bounce higher than rubber balls. An average will then be taken. 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. rubber ball 39 cm 38 cm 41 cm 39 cm. Working out the variation in results shows how accurate the experiment was. The coefficient to restitution can be found out from a graph of, it follows the gradient of the graph change in h. . 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. In our "Balls Bouncing Off of Surfaces.". The Swiss like to get points over and done with in a short period of time. As the ball hits the blades of grass, they bend and don't provide as much upward rebound. This is the reason we put in our hypothesis that a Does height make a difference? The Graph on page 23 shows that all of the results were very close together. If the drag is less the ball will fall faster and is less likely to reach its terminal velocity. - Pencil x This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. Concrete will help bounce a ball the highest as it's hard and Repeat the process three times with the same ball and record results. This means that not all the GPE is converted into KE as it would have been if the ball had been dropped in a vacuum. Drag is a squared function of velocity and therefore as the ball drops drag increases a greater amount each second. Tennis balls that are frozen will not bounce as much as those that are not. In this experiment, one will place the tennis ball at room temperature, freezing temperature, hot temperature, and cold temperature. An investigation into how they impact play on the court. The felt helps to create spin on the ball when it is hit with a racket. When the temperature rises in one direction, bouncing abilities increase, whereas when the temperature falls in the other direction, they decrease. 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. Air resistance exists but does not affect the velocity of the ball significantly. This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. At 3ft, the basketball bounced 20 inches, the tennis ball bounced. This will hopefully discount any anomalies automatically and leave us with three accurate and reliable results. Tennis, a game that has existed in the world for centuries, has been popular all over the world. When printing this document, you may NOT modify it in any way. Therefore, harder surfaces will ultimately bounce a ball higher. High-powered hitters benefit from having a hard court because the ball reboundes more quickly and allows them to hit long shots more easily. was proven correct after our experiment. Does a tennis ball bounce differently on different surfaces? Measure from the bottom of the ball. Acrylic-topped, this surface offers the most consistent ball bounce of all the outdoor tennis courts. By conducting our experiment, we learnt that well-inflated rubber balls bounce the the higher it popped up into the air. After the ball reaches terminal velocity, no more GPE is converted into KE is the ball cannot get any faster. The experiment was conducted well however as the utmost efforts were brought into place to avoid parallax error and it was ensured as far as possible that factors that affected how high the ball bounced, excluding the height, were kept constant throughout the experiment. Therefore the heavier the ball is, the faster its terminal velocity. The bounce should be between 53 and 58 inches. It is a firm rectangular surface with a low net stretched across the centre. Also the facts that there were no anomalies and that all of the points were very close to the line of best fit show that the experiment was relatively accurate. This blew the light balls away, giving us an unvalid result or catch. 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. Let the ball bounce until it stops, and then stop recording. 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. You will use an air pump, a basketball, and an air pressure gauge to test if changing the air pressure will change the bounciness of the ball. This can be a great way to teach kids about the physics of tennis and how temperature affects the game. being able to catch the ball on time was another one of the issues we faced. The Physics of Grass, Clay, and Cement. Experiment Click the following buttons to skip to a page. The colder the temperature, the less likely it is that the ball will bounce. If the elastic potential energy is the same then the same amount of energy is converted back into KE and so the balls leave the floor at the same speed. It does not store any personal data. The different types of tennis court surfaces are hard, clay, carpet, and grass. 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