These inaccuracies could have been caused by external factors or parallax error even though efforts were made to avoid parallax error occurring - by dropping the ball one time that was not measured and placing a blob of blue tack onto the meter rule at the approximate height it bounced to. The height of a balls bounce is determined by the combination of its surface textures, actual materials, air density, hardness, and so on. Place one of the tennis balls in the freezer for 20 mins 2. - Measuring tape x The pressure on the ball is created by the air pushing against it. was blowing in, so that if the balls were blown away, they would come straight to In this paper, the dynamics of a bouncing ball is described for several common ball types having different bounce characteristics. Therefore the ball dropped from the higher height must give out more thermal energy in order to end up with the same amount of energy as the other ball. When printing this document, you may NOT modify it in any way. Therefore the ball ends up with more GPE, , assuming g and m stay constant, results in an increase in m g h, , assuming g and m stay constant, results in a decrease in m g h, As the ball is accelerating due to gravity, at 9.81m/s. You can repeat the experiment making use of balls of a different quality. In this manner, you apply heat shrink to your head and heat it up until the shrink shrinks. Hot balls were the more likely to bounce higher than cold balls. Its not just a game for the wealthy; its also a game for everyone. Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot. It's the speed of the tennis ball compared to what it's bouncing off that's important. Therefore, our hypothesis was refuted by our final results. This cookie is set by GDPR Cookie Consent plugin. Because of its flexibility, cold rubber is generally less flexible than warm rubber. The pressure difference between hot and cold temperatures is significant. As the ball is accelerating due to gravity, at 9.81m/s2it is constantly getting faster and therefore the drag force gets bigger and bigger. Warmer balls bounce better than cold ones. (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. The felt helps to create spin on the ball when it is hit with a racket. Note whether the ball and surface showed more of an elastic or inelastic collision. This experiment requires a ball that will bounce and a meter stick or other measuring device. This is because it is easiest as the figure read of the meter rule is the result. Friday - 25/04/14 Cold balls tend to have a bouncier texture. When printing this document, you may NOT modify it in any way. Science Buddies Staff. What affects ball bounce? Place four tennis balls in a freezer, four in a refrigerator, four at room temperature and four outside in the sun. 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. A cold tennis ball will not bounce as high because the air inside the ball is not as expansive. Once the drag force equals the gravitational force all forces are equal and acceleration stops. This would allow one to find the terminal velocity of the ball. A hard surface, like concrete or hardwood, hardly absorbs any, so most of the kinetic energy of the fall goes into bouncing the ball back up. faced. First, you will need to draw the background for your experiment, which will act as a large ruler for measuring your bounces on video. This would provide evidence on how the height from which the ball is dropped from affects the height to which it bounces without air resistance. Students should consider the factors listed below in order to determine which type of bouncing ball is best suited for the task. What factors affect the bounce height of a ball? 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. Warm up the ball before it is used to increase its bounce. 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. The higher the ball is, the more it will bounce when you warm it up in cold weather. 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. 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Explanation: When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. Equipment/materials used: Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. A lot of because a basketball is very well-inflated and hard, which gave it a higher bounce. Therefore the height that it reaches is less high. Method:The apparatus will be set up as shown: H is the height of the ball before it is dropped. The ball has reached its terminal velocity and cannot fall any faster (unless dropped in a vacuum). Make a line graph of your data. 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. The reason balls bounce is quite advanced science. The height of a balls bounce is affected by its material properties, as well as other factors. The ultimate answer was that a basketball By conducting our experiment, we learnt that well-inflated rubber balls bounce the A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. It is also necessary to warm a ball, because the energy inside it is released. troubles my partner and I had during our experiment along with the problems we - Ping pong ball x 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. Drag is a squared function of velocity and therefore as the ball drops drag increases a greater amount each second. 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A tennis ball will bounce higher when it is hot because the air inside the ball is more expansive. The maximum height will have to be less than two meters as that is the maximum height that the equipment allows. This therefore provides accurate and reliable results. Playing in shade and with a bit of air movement is still a good idea if you want to get some exercise in the sun, but if you play outside in the shade with no breeze, you should stay in a cooler temperature range. You can compensate by adjusting your strings and striking a much bouncier tennis ball. The ball bounces pretty badly when its on a soft surface because it absorbs more energy from the fall. 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. small balls sometimes, but we could have improved this by taking many attempts 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. Science Buddies Staff. Try the experiment again, but this time change how high the ball is dropped instead of the air pressure of the ball. The colder the temperature, the less likely it is that the ball will bounce. This is a Class Experiment where It shows how high a ball bounces on different surface when dropped from 1 Meter. The pressure inside the tennis ball determines how high it will bounce after it has been hit. 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