One weakness of my investigation was the angle our camera was set on cause a person was holding it so the angle of the camera might have varied. Physicists take on the challenge of explaining events that happen on the grandest scale imaginable to those that happen at the level of the smallest atomic particles. Alex Boorman Ph20 - - Aim: To find out what affects the height to which a ball bounces. From my results and graphs. After it bounces back up to its greatest height, how much kinetic and potential energy does it have then? Upon impact with the ground this energy is transformed into elastic potential energy when the ball squashes, which is then transformed into kinetic energy again, sending the tennis ball back into the air. The cold ball should bounce about 80 percent as high. Yes No Thanks for your feedback! I plan to collect at least ten results as this will make the conclusion and graph I am able to draw from the experiment more accurate than if I had less results than ten.
Use the pencil and ruler to connect the incoming and outgoing trajectories of the marble to the point where the marble bounced off the wood. I noticed that as I increase the drop height of the ball, the bounce height would also increase. Results table Table of results to show: The loss of energy Drop height m Average bounce height m Initial P. Therefore any change to the height from which the ball starts with affects the height to which it bounces to. This would allow the actual coefficient to restitution to be calculated. These both techniques are different so they would have different bounce height.
Air density will not change enough to affect the flight of the ball seeing as all the results will be collected during a brief period on one day. Scales are available in the classroom and in the laboratory for you to find this mass. Do you think it is important to understand materials and their properties, especially in the design of a ball used in a game? This will be called the average of the middle three repeats. You can also notice this in my first graph because it is a line which always goes up, never down. The weight and material of the ball will be kept the same throughout the experiment by using the same ball.
The heights will increase at 25cm, the starting height will be 25cm then 50cm, 75cm, 100 cm, 125cm, 150cm, 175cm and 200cm. We have to look at the number that has an x at the end and the first two numbers of line is percentage for example that my are 64 and as we all know that efficiency is calculated percentage so my efficiency for the ball would be 64%. Yes No Thanks for your feedback! The balls bounce increase at a constant rate. The ball that is not hollow will do the opposite. Key concepts Energy Gravity Physics Sports Introduction Playing basketball can be hard work. Yes No Thanks for your feedback! Players not only have to run around the court, but just dribbling the basketball takes some serious effort, too. Yes No Thanks for your feedback! Risk assessment There are not many risks from dropping a ball but safety must be considered.
Write the question on the board. How much of that energy is kinetic and how much potential? This was only realised when the graph was plotted, and was probably due to my lack of scientific knowledge. The higher the air pressure the more air particles per cubic meter. Efficient Of A Bouncing Ball Lab Report Introduction No work done is 100% efficient; everything has at least a small amount of energy wasted. Their theories are then applied to human-scale projects to bring people new technologies, like computers, lasers, and fusion energy. The Internet was used to collect more information. This is due, in large part, to their construction.
Both show the general trend that the ball is more or less at a constant. Exactly how high does the basketball bounce on each of the different surfaces? Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units. Have you ever wondered why that is? The law of conservation of energy implies that a bouncing ball will bounce forever. When a collision occurs where kinetic energy is lost, it is called an inelastic collision. The closeness of your answers standard deviation depends on the care with which you do the experiment.
If you have specific questions about your science fair project or science fair, our team of volunteer scientists can help. The exact interval will be determined after the preliminary experiment, as will the number of heights that the ball will be dropped from. The drag force increases as the ball goes faster. If this activity is not able to be accompanied by a math lesson on graphing, introduce the topic before the activity starts or perhaps after the class has recorded its data and worked through it as a group. What are all the different sports that are played with balls? Observations and results Did the basketball bounce much higher on the harder surface compared with the softer one? Variables: Type of Surface Height of Drop - Independent variable Temperature of Ball Material of Ball Acceleration Due To Gravity Mass Angle of Surface Air Resistance Diameter of Ball Height of Bounce - Dependant Variable Plan I aim to find out if warming up squash balls before bouncing them affects the height of its bounce. Yes No Thanks for your feedback! Students determine the coefficient of restitution or the elasticity for super balls.
This means that to keep the ball bouncing to the same height, players must continually put energy into the ball with each bounce. The wood will act like a wall, and you're going to roll the marble at it from different angles to see how the marble bounces off. Chlorophyll green coloured pigment in leaves absorbs light and changes it into chemical energy, which is used to power all the chemical reactions that go on in a plant cell. You can either have a volunteer run the camera for you, or set the camera up on a tripod. Bouncing Ball Experiment Our simple experiment is to drop a ping pong ball weighed at 3 grams from a height of 1 metre then 90cm, 80cm, 70cm, 60cm, 50cm, 40cm and of course zero cm. Safety concerns There are no major safety concerns but the ball should bounce only bounce vertically not horizontally. A sample size of 3 results will be taken from each height the ball is dropped.
However, if your are interested in the physics behind how balls bounce, the following principles apply: The ball begins at rest from height h with potential energy mgh, where m is its mass and g is the acceleration due to gravity. When it bounces to the highest point of its bounce they read the number on the ruler from the bottom of the ball. Point out that there is a second column called Modifications. I predict from this that the increase of the height bounced should be constant, as should the surfaces efficiency, due to the proportional increase in the graph to show the height bounced by the ball on the different surfaces. This made my data less precise since the experiment we conducted was out side of a closed environment the air resistance was not the same at all times cause sometimes there would be is the wind and sometimes there would be no wind at all. Students investigate different balls' abilities to bounce and represent the data they collect graphically.
I think that the answer is due to the properties of the landing material. If there is no drop height there should be no bounce height which should be 0 cm. The first independent variable that will be tested. This will be a table tennis ball. Why is it when you stop dribbling a basketball, the ball stops bouncing. When the ball bounces back up it is using its force to overcome gravity, which is trying to push the ball back down to the ground.