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Download Free PDF. The Effect of Various Drop Heights on the Bounce Height of a Rubber Ball Aim. Angel Mai. Download PDF Download Full PDF Package This paper. A short summary of this paper, bouncing balls science coursework.
Download PDF. Download Full PDF Package. Translate PDF. Angel Mai Fei- En Science Coursework — Bouncing Balls Candidate Number The Effect bouncing balls science coursework Various Drop Heights on the Bounce Height of a Rubber Ball Aim: To determine the percentage of the drop height to which a rubber ball returns on bouncing and whether that percentage varies for large or small drop heights, bouncing balls science coursework.
This will also indicate bouncing balls science coursework efficient the rubber ball is. Hypothesis: The return height percentage is constant for all drop heights up to the 4th floor Such as when a rubber ball hits the ground, there is friction, bouncing balls science coursework, which transforms some energy into thermal energy and sound energy.
The rest of the kinetic energy will then transform into elastic potential energy as it makes contact with the ground. Overview: The rubber ball will be released with zero initial velocity by dropping from the hand at various heights ranging from 20 centimeters to 12 meters, bouncing balls science coursework. The bounce height will be calculated by the time difference between the first and second bounce as determined by recording the sound of the bounce and measuring the sound difference in sound editing software.
Controlled Type of ball The efficiency of a rubber ball varies Use the same ball for every with different types of balls, and trial. since the aim of this investigation is to determine the effect of drop bouncing balls science coursework variation on the efficiency of the bounce, the same type of ball must be used for all trials.
Type of bouncing surface The type of floor tile, concrete, Use the same floor for wood… affects the efficiency of every trial tiled concrete bouncing balls, since different floors floor. absorb varying amounts of energy. Therefore, bouncing balls science coursework, all trials must be performed on the same type of floor, bouncing balls science coursework. Impact location at center of The tile floor has grout lines, which An observer disqualifies tile could affect the bouncing any bounces that were not performance of the ball.
Therefore, clearly in the central area all trials must be performed in the of a tile. center of a tile. Initial velocity of ball The bounce height of the ball The ball should be released depends on impact velocity, bouncing balls science coursework, which from a still hand in order to depends on drop height.
To have zero initial velocity, bouncing balls science coursework. investigate the effect of bouncing balls science coursework height alone, the initial velocity must be zero. Air temperature Air density varies with temperature; The air temperature could therefore, the air resistance also not be controlled but was varies with temperature.
Since air monitored and was found bouncing balls science coursework cannot be eliminated in to have kept a constant this investigation, it must be kept temperature 22C ± 1C constant. throughout the investigation. Angel Mai Fei- En Science Coursework — Bouncing Balls Candidate Number Procedure: 1. Start computer and launch GarageBand.
After eliminating background noise, start the sound recording with the microphone placed near the point of bouncing balls science coursework of the ball. Then with outstretched arm and hand facing downwards, release the ball from a height of 0. release from rest.
Repeat steps until there are results for at least 5 trials with the same height. Recruit helpers to steady the stepladder to avoid accidents. Using the stepladder as appropriate, repeat steps for the following drop heights: 0. Take the stepladder to the second floor balcony and, using helpers to steady the ladder to avoid accidents, measure the height from a safe and suitable drop location to ground floor with a tape measure. Conduct a series of 5 drop trials from this height, making sound recordings of the first two bounces and labeling the files with the drop height for this location.
Recruit an observer to watch the bounce location and disqualify any bounce that does not occur unambiguously in the non-grouted center area of the tile. Repeat any disqualified bounces. Repeat Step 8 after increasing the height by approximately 1 meter using the stepladder and helpers to ensure safety.
Repeat Steps 8 and 9 for the third floor and the fourth floor. Open each sound file in GarageBand and determine the time difference between the first two bounces of the ball by measuring on the time axis bouncing balls science coursework the center of the first sound peak to the center of the second sound peak of bouncing balls science coursework bounce.
Record the time difference with the corresponding heights as noted in the file name. of 5 tries m 0. The efficiency consistently declines as the drop height increases, as can be seen from the graph above, which shows negative slope for the trend line.
This contradicts the hypothesis of this investigation, which states that the efficiency of the bouncing ball will be constant for all drop heights. The efficiency of the ball tested in this investigation decreased as the drop height increased, therefore the hypothesis is refuted. In other words, the efficiency of a bouncing rubber ball is not constant for different drop heights.
Possible reasons for the decrease in efficiency of the bounce include energy loss due to increasing air resistance and internal friction in the rubber ball, energy loss due to increasing volume of impact sound. As the drop height increases, the maximum bouncing balls science coursework of the ball increases and since air resistance increases disproportionately with speed, larger amounts of energy are lost at greater drop heights. Internal friction arises within the rubber ball as it deforms and returns to its original shape during a bounce.
The volume of impact sound depends on impact velocity; therefore more energy is lost with greater drop heights, which result in greater impact velocity. Evaluation: A strong point of this investigation is that the results obtained are clear and consistent a consistent decline is observed in the efficiency of the ball. Further investigations should be conducted to determine in what way the decline in efficiency is related to changes in drop height.
The graph suggests that efficiency would reach zero at a drop height of 25m, which contradicts the expected results. Further investigations should be conducted to see how the efficiency changes at greater heights near 25m. Some random errors that may have occurred include non zero initial velocity; interference from background noise, failure to ensure that the height measured by tape measure was indeed the vertical height, identical to the trajectory of the ball.
Multiple trials were conducted to reduce the effect of random errors. A weakness of this investigation was that initial velocity was controlled manually by attempting to have a steady hand. In order to eliminate the influence of an unsteady hand dropping the ball with a small initial velocity, standardized mechanical equipment should be employed to ensure the ball is released from rest.
This could be done by staggering the times when science groups are performing the experiment. The drop height was measured by tape measure but no steps were taken to ensure that this measurement was vertical and would therefore be identical to the path taken by the ball. To ensure that the vertical height is measured, a plumb line should be used to find the vertical. Related Papers Striking results with bouncing balls By E. Affect of Air Pressure on The Coefficient of Restitution of a bouncing ball By Aryonn Rawol.
The relationship between the frequency of an oscillating plate and the rebound height on a ball dropped onto it By Aashman Vyas. Predicting the timing of dynamic events through sound: Bouncing balls By Anatoliy Kharkhurin and Valeriy Shafiro. Download file. About Press Blog People Papers Job Board We're Hiring! Help Center Find new research papers in: Physics Chemistry Biology Health Sciences Ecology Earth Sciences Cognitive Science Mathematics Computer Science Terms Privacy Copyright Academia ©
Using slow motion to estimate the height of a bouncing ball experiment
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Bouncing Balls Coursework Science as the global source for Bouncing Balls Coursework Science professional paper writing services at all academic levels. Our team is based in the U.S. We’re not an offshore “paper mill” grinding out questionable research and inferior writing/10() Angel Mai (Fei- En) Science Coursework – Bouncing Balls Candidate Number The Effect of Various Drop Heights on the Bounce Height of a Rubber Ball Aim: To determine the percentage of the drop height to which a rubber ball returns on bouncing and whether that percentage varies for large or small drop heights Gcse Science Coursework Bouncing Balls Once our experts hear Gcse Science Coursework Bouncing Balls someone asking: "Help me write my essay for me or I'll go crazy!", they know what to do. We're good at writing essays!%. We Offer. Lincoln25 /10()
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