This means that we can approximately calculate the amount of energy that the ball conserves as it hits the floor and therefore the height to which it will bounce for any given height in a vacuum. It is used to determine what the variable changed. The balls are shown at rest, about to bounce back up. Changes in the area of linoleum floor tile that the ball collided with may have affected the height to which it bounced to thus producing variation between results. Yes, as the ball is oscillating about the equilibrium position (in height) and goes back to its initial position after a period of time. WebThis experiment,is an investigation into the maximum height of the bounce of a ping pong ball when it is first released.This is because of the unpredictability of the bounce not always reaching the same height.This we can assume their are many factors effecting the bounce of the ping pong ball.The following experiment will determine how different This can either be assumed and chosen, or it can be stated in a question.). Material that you may test are: Carpet, Rubber matte, ply wood, sponge, Styrofoam, another ball, . WebThe main variables in a science experiment are the independent variable, the dependent variable and the control variables. However, the tennis ball we used may be a very old one, and to definitely prove that our hypothesis is wrong for most tennis balls we would need to repeat the experiment with many different tennis balls. What is the control variable in the bouncing ball experiment It could also be a written statement of what occurred during experiments. (The upward direction was assumed to be positive in this example. Read books, magazines or ask professionals who might know in order to find out the factors that affect the movements of a dropped ball. Set individual study goals and earn points reaching them. WebBouncing Ball Experiment. This is because it is easiest as the figure read of the meter rule is the result. Once the drag force equals the gravitational force all forces are equal and acceleration stops. When the ball collides with the floor, the ball becomes deformed. This would mean that one could re-examine the height to which it bounced to and find it exactly instead of having to make a split second judgement which is not half as accurate. If you did not observe a consistent, reproducible trend in your series of experimental runs there may be experimental errors affecting your results. WebWhat is a control? The sum of the two, mechanical energy, stays the same ( is conserved.). Is your hypothesis correct? WebPhysics Lab 1 - Bouncing Ball - Hardik December 2019 PDF Bookmark This document was uploaded by user and they confirmed that they have the permission to share it. Everything you need for your studies in one place. The more particles per cubic meter, the more drag acting upon the ball. As energy cannot be created or destroyed it follows that the energy must have come from the energy that the ball possesses. Your challenge will be to find a way to determine your balls e, and the initial height of the ball when you first dropped it. Does a ball bounce higher or lower in moon (Less Gravity), while all other conditions are constant? This means that the faster that the ball travels the larger the force of air resistance upon it. Constants are the release height, the bouncing surface, the type and the size of the ball. This denting extracts energy from the balls motion and stores much of it in the elastic surfaces of the floor and ball. This coefficient of restitution, e, is actually the ratio of the velocity of recession (upwards after the bounce) to the velocity of approach (downward before the bounce). A series of experiments is made up of separate experimental runs. During each run you make a measurement of how much the variable affected the system under study. Grades: Preschool and K-2 Length of Lesson: Approximately 45 minutes Related Video: The Hawk Factor episode Learning Goals: Be perfectly prepared on time with an individual plan. Make a step-by-step list of what you will do to answer each question. The second stage is the point at which the ball decelerates, changes direction once it has reached the peak point, and starts falling to the ground. Using the geometric sequence for an infinite sequence and substituting the given values we get: \(S_{\infty} = 2 \cdot \frac{\alpha}{1-r} = 2 \cdot \frac{6m}{1-0.38} = 19.35 m\). Physics Ia on Bouncing Ball These balls do not bounce as well as balls with high air pressure. The third stage is the point at which the ball is momentarily deformed, and bounces off the ground in an upward direction until it reaches its maximum height. The ball then rebounds: it undents and tosses itself up into the air to a good fraction of its original height. 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. Bouncing Ball Experiment - GCSE Science - Marked by This also proves the accuracy of the experiment. In this project we will try to find out what factors affect the bounce of a dropped ball. Control Variable: Simple Definition - Statistics How To or hold Ctrl and then use arrow keys to move the wave 0.01 second left or right. About a foot above the table top is plenty. Discuss specifically how you developed your e and initial height values. The exact interval will be determined after the preliminary experiment, as will the number of heights that the ball will be dropped from. This slope tells us how bouncy the ball is. The ball rebounds to 38 percent of its previous height and continues to fall. Click Create Assignment to assign this modality to your LMS. The higher the air pressure the more air particles per cubic meter. More thermal energy is also produced. Review each step of the procedure to find sources of potential errors. The purpose of this project is to find out what factors affect the bounce of a dropped ball. If you did not observe anything different than what happened with your control, the variable you changed may not affect the system you are investigating. Working out the variation in results shows how accurate the experiment was. Bounce/Release is the relation of bounce height to the release height. the Scientific Method Use two people to measure the results; one person to drop the ball and one to measure the height to which it reaches after bouncing. 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). 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. Summary of task. Several meter sticks for measuring the height of the bouncing ball or drawing a larger meter stick. Procedure: One group member drops a tennis ball from a specific height, while the other group member notes how high the ball bounces. where m is the mass of the moving object, and v is the velocity of the moving object. This is also reflected in the velocity graph; the velocity is at its maximum at the minimum displacement and goes through zero at its maximum heights. 8. 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 h, (where the blue tack was stuck, approximately). A real-life bouncing ball example would experience an oscillatory motion which would gradually lose energy, causing the height of the bounce to reduce over time until eventually, the ball came to a stop. The terminal speed is the maximum speed reached when an object is dropped from a great height. In a real-life scenario, the ball will eventually stop moving due to external forces such as air. Adapted from Plangenhoef, Patterns of Human Motion. WebThere are many different variables that would affect the bounce height of a ball. D) If I freeze a tennis ball, then it will not bounce as high. This is correct unless the ball shows signs of reaching terminal velocity. Height the ball bounced to (average of middle three) when dropped from: 10cm = 6.7 6.7 = 66% of 10 (to the nearest percent), 20cm = 14.0 14.0 = 70% of 20 (to the nearest percent), 30cm = 22.3 22.3 = 74% of 30 (to the nearest percent). 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. Advanced levels of experimental science rely heavily on graphical and mathematical analysis of data. 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. Prior to the sample task, students investigated investigated forms of energy and energy transfers and transformations. It shows that heights were recorded that exceeded the height that the ball would have reached had it been dropped in a vacuum. What principle describes the bouncing motion of a ball? 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. This did not happen in my experiment however. The motion of the ball can be described using velocity, displacement, and acceleration graphs, or geometric sequences. So if we double the release height, we will get double bounce height. The bounce of a dropped ball has a direct relation with the air pressure inside the ball. WebThe independent variables in the experiment are the heights that the balls are dropped from, the surface that the ball bounces on, the type of ball used, ball is dropped vertically, and that when dropping a ball no force is applied. A control variable is any factor that is controlled or held constant during an experiment. \[S_{\infty} = \frac{\alpha(1-r^{\infty})}{1-r} = \frac{\alpha(1-0)}{1-r} \qquad S_{\infty} = \frac{\alpha}{1-r}\]. To find out what affects the height to which a ball bounces. Therefore of the GPE that the ball possessed at the beginning some energy is given off as thermal energy. Air pressure will affect the balls fall slightly as the concentration of air particles per cubic meter varies with air pressure. The ball moves upwards, reaching stage 1, i.e., maximum height, and its velocity is momentarily zero. The three trials at each height are then averaged, and the average bounce height is graphed versus the drop height. \(v^2 = 2 \cdot g \cdot hv = \sqrt{2 \cdot 9.81 \frac{m}{s^2} \cdot 3 m} = 7.67 \frac{m}{s}\). The formula for gravitational potential energy is PE = mgh where m is the mass of the ball measured in kg, g is the gravitational acceleration constant of 9.8 m/se c2 , and h is the height of the ball in m. As the ball falls through the air, the potential energy changes to kinetic energy. Therefore the height that it reaches is less high. Free Bouncing Ball Experiment Essays and Papers | 123 Help Me Ball As the ball flattening upon impact with the floor is not visible as it happens so quickly it would be almost impossible to measure the size of the ball on impact with the floor. For instance result 3 from 200cm was an anomaly but was not taken into account when taking the average of the middle three. A controlled variable is one which the researcher holds constant (controls) during an experiment. Use a racquetball, a golf ball or any kind that bounces well and makes a nice crisp sound when it bounces. This causes thermal energy to be given off. The more KE that the ball possessed as it hit the floor, the more that was transferred into elastic potential energy and back into KE.
1970 Power Memorial Basketball,
Sierra Sport And Racquet Club Membership Cost,
Dr Singh Urologist St Clairsville Ohio,
Jamie Whincup Partner 2020,
Jason Knight Knives For Sale,
Articles C