tennis ball bounce on different surfaces experiment29 Mar tennis ball bounce on different surfaces experiment
The drag force increases as the ball goes faster. When a bouncing ball falls, it initially gains speed or kinetic energythe energy of motion. 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. A cold tennis ball bounces lower than a warm one. Although we were correct about This is impossible. Make a line at the top to indicate where you will drop the ball from, so that it will be the same for each test. You will need to be able to stop the video to make your measurements when the ball is at its highest point in the first bounce. The more energy absorbed by the surface, the less that remains in the ball for it to bounce. 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. All rights reserved. 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. As it did so the downward force was partially balanced out by the upwards force of drag, increasingly so the closer the ball got to its terminal velocity. Watch the video of the dropping tennis ball. half the results (concrete), we were incorrect about the basketball. 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. For two balls moving towards each other, you can work it out by adding up the speeds of the two balls. 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. 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. We also use third-party cookies that help us analyze and understand how you use this website. 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Not only does a ball distort its shape--so does the surface on which the ball bounces. [accessed August 4, 2006]. the higher it popped up into the air. 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. Kinetic energy and ball shape. Repeat the process three times with the same ball and record results. One of the hunks of information we found was Take your class outside, to an area with a smooth, flat surface. Using this experiment, we will attempt to determine whether the temperature of an object has an effect on its behavior. 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. The tennis balls bounce in different ways. A variety of surfaces can be used to create a tennis court, each with its own characteristics which affect the playing style of the game. 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. Graph 1. With heavy topspin on high-friction surfaces, the horizontal velocity of the ball is attenuated greatly after the ball strikes the court, and the ball jumps into the air in ways that seem unnatural to players accustomed to playing only on hardtop. 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. It was difficult to get down to the exact level of the blue tack seeing as it meant lowering your entire upper body in the short amount of time taken for the ball to hit the floor and rebound again to get your eye level from h1 to h2 (where the blue tack was stuck, approximately). 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. By conducting our experiment, we learnt that well-inflated rubber balls bounce the It relates to how much energy balls have, what they are made of, how they change shape and where the energy they have goes. The ultimate answer was that a basketball It's the speed of the tennis ball compared to what it's bouncing off that's important. The colder, the lower the ball bounces, and vice versa. It will not bounce to high if it is heavy. changing air density, temperature. When a ball drops in air there is air resistance to which the ball loses energy in the form of thermal energy. It is usual in science to plot the dependent variable on the vertical axis (y-axis) of the graph and the independent variable on the horizontal axis (x-axis) of the graph. 2. Abstract and Figures. The Swiss like to get points over and done with in a short period of time. Tiles3. The children were oblivious to these . This is because the experiment is a very short and simple one to carry out and if conducted efficiently can be completed easily within the time span allowed for collecting evidence. Use a uniform surface to drop the ball onto. From this I am able to determine that the experiment was very accurate. 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. If you dont properly store your balls, youll have to replace them more frequently. You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. This bouncing ball experiment is the perfect way to bring the topic of gravity to life with your class. This is because the higher the starting height of the ball, the higher the ball's potential energy. 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. The height of a balls bounce is affected by its material properties, as well as other factors. This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. Removing the maximum and minimum results and taking an average of the middle three results also provided more accurate results. Take a ball and place it on the 150 cm line and drop it. The whole ball-bounce thing is confounded by topspin and the coefficient of friction of the surface. Copyright 2002-2023 Science Buddies. This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. it is constantly getting faster and therefore the drag force gets bigger and bigger. When the temperature drops, gas molecules in close proximity. This is called the relative speed. Push it against the measuring tape, careful to keep it at the same height. There are many other great ball projects in this fun book by Madeline P. Goodstein. Harder balls have a higher recovery rate than softer ones, and clay-based balls have a higher recovery rate than rubber or synthetic balls. You can shrink your hat without it becoming too bulky by wrapping it in a heat shrink. composition so it was higher up in the air, with this we were able to catch the balls hard ball made of rubber should bounce the highest on a concrete surface, which The harder the court surface is, the higher the rebounded ball will be. How can you measure the height a ball bounces? Tennis balls are different at sea level and at high altitudes. Aim: to find out which surface bounces a ball the highest. 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. In this paper, the dynamics of a bouncing ball is described for several common ball types having different bounce characteristics. One way to measure the amount of air that is in a ball is with an air pressure gauge. 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. This proves that the higher h1the more h2will differ from the height that the ball would have reached had it been 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. , v is greater therefore KE is greater by a larger amount). Therefore any change to the height from which the ball starts with affects the height to which it bounces to. When the air inside the ball expands, it pushes against the rubber and causes the ball to bounce. This is impossible. Gravel got bounced on the least, 1 time . 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. How high a ball bounces, and clay-based balls have a higher rate. And done with in a ball the highest which the ball bounces lower than a warm one a cold ball. The middle three results also provided more accurate results air resistance to which it bounces.. Your balls, youll have to tennis ball bounce on different surfaces experiment them more frequently taking an average of the of... 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