At the drop height, the tennis ball has graviational potential energy which is then transformed into kinetic energy as it falls to the ground. This was because as the ball was dropped from greater heights the gravitational potential energy increased simultaneously, which could then be converted back into kinetic energy as the ball bounced back. Explanation: When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. Repeat steps 2-4, increasing the drop height by 25 cm. Some materials like rubber have more elasticity.
Since the tennis ball reached its apex height on the rebound at a high speed, it was difficult to measure with adequate precision with sight alone. A tennis ball is hollow rubber, coated with felt. Instead, we demonstrate a shortcut way to model the diminishing energy and magnitute of bounces: This is a technique that you could apply to an out-of-range, repetitious bounce such as you created for the basketball in the previous lessons. An uneven surface can cause unexpected motion: That is the subject of the lesson that follows. Do you have pajama pants with elastic material in the top? Some of the energy of a falling ball gets absorbed by the surface that it strikes. Sample calculations To show ownership of your results and graphs, it's important to show a sample of the calculations that you have used in your experiment. The basis of a science fair project on the bouncing height of a ball will be an examination of two concepts in physics.
Results Show your data tables here. While a Styrofoam surface can help a ball bounce faster and higher, a ceramic or metal surface cannot bring the same effect. Of course for an air filled ball, there are losses associated with the compression of the air: while the air is adiabatically compressed, it heats up; while it is hot, it dissipates heat to the environment; and when it expands, it cools down again. When the ball hits a surface, the pressure of the material reverting back to its shape causes it to bounce. Only the energy stored as elastic potential in the ball produces the force against the floor to send back up. For example, there is about six types of Titelist sorry for spelling if it's wrong. This is similar to the 'because' statement in the hypothesis, but it is explained here at length.
You can keep them in a special pressurized tennis ball can, but these are not used very much anymore. That is entirely dependent on the initial height it is dropped from. See how distorted it is? Different types of balls react differently to these forces. Such differences include the ba … ll's diameter, felt, and air pressure. Not the answer you're looking for? A steel ball and a wood ball will bounce lower than a tennis ball, but that's because of the coefficient of restitution, the energy loss due to the sound of impact and heat generated. When you drop a ball from a greater height, it has more kinetic energy just before it hits the floor and stores more energy during the bounce—it dents farther as it comes to a stop.
Objects that are more stretchy are usually more elastic, too. LeeH That answer works well for a nice bouncy tennis ball. It doesn't matter if it's the same brand because they are all different inside. In a vaccum everything accelerates and falls with the same speed 9. Try it for different balls! Temperature Variations You would notice that balls having more elasticity perform better when the temperature is warmer. This is the dependent variable because it will change in response to the changes made in the bounce height due to the different amounts of gravitational potential energy involved.
A very non-bouncy ball, say a lump of clay, will bounce better on some soft surface like a trampoline than on a hard surface like concrete. If you drop a basketball or a heavy steel sphere, then the mattress springs become more important and some energy will be returned to the ball and it will probably bounce higher than the ping-pong ball. That height fraction is equal to the fraction of energy that the ball successfully stored and returned during its bounce. To improve the reliability of the results for this experiment, one could use high speed video captures which could be slowed down to measure accurately against the ruler in the background. An ideal, perfectly elastic ball operating in a vacuum would rebound back to its original height, but real-world balls are not perfectly elastic, and, thankfully, we don't live in a vacuum. It doesn't depend on the actual mass. This lesson compares the bouncing of a bocce ball, a tennis ball, and a golf ball.
Further investigation: To explore gravity and gravitational forces, get a stopwatch and time each ball from the time it is dropped until it hits the ground. By consulting the ball's position relative to the measuring device behind it in the recording, you can then record a more accurate measurement of the ball's height. The results of the experiment support the hypothesis that as drop height increases, so too will the bounce height due to an increase in gravitational potential energy, however the bounce efficiency remained relatively consistent. For truly elastic collisions the C. At very high temperatures the ball would probably begin to get a bit squishy and loose some of its elastic properties and not bounce so high. Various court surfaces require minor differences in the ball's construction to be playable and durable on each surface.
Physics teachers spend their days showing and explaining the marvels of physics, which underlies all the other science subjects, including biology, chemistry, Earth and space science. There are two balls and the only difference between them is the mass. This could apply to space rover landings that use airbags to reduce impact upon planetary surfaces, where bounce height could affect the final landing location. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 on this site the. Of course the state of inflation of the ball also has an effect on the C.
It will stop when the force of the bounce is no longer sufficient to even overcome the force gravity exerts on the ball. It turns into kinetic energy, or the energy an object has when it is moving. Bloomfield of the University of Virginia. As the squashed ball returns to its original shape, its stored elastic potential energy is transformed into kinetic energy motion energy and the ball flies through the air for a home run! The answer lies in how far the ball has dented inward due to its collision with the floor. Abstract You might think that plants and animals have little in common with batteries, springs, or slingshots, but they actually do have something in common.