Bouncy Ball Experiment
Aim:
The aim of this experiment is to investigate the efficiency of a bouncing ball, and the factors which affect its efficiency.
Prediction I predict that the higher I drop the ball from the higher it will rebound up, because it will have more gravitational potential energy the higher dropped from. As it is dropped the ball will have kinetic energy, and then when it hits the ground changes to heat and sound energy, and kinetic as it rebounds back up. The higher up the ball is dropped from the more gravitational potential, more kinetic energy on the way down and therefore more sound heat and kinetic energy when hitting the ground. The ball will bounce higher the higher dropped from as the energy has to go
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 I dropped the ping pong ball from 25cm and recorded the rebound height against a ruler.
 I repeated this at 25cm 3 times as I did with every height to make the results more accurate by using an average.
 I went up in 25cm dropping 3 times at each height up to 2m.
 To make the experiment fair the height that the ball is dropped from is the only variable that will change. Other variables (type of ball, surface dropped on) won 't change to keep the experiment fair. I then worked out the efficiency of the drop by this equation Height at end Height at start x 100 = efficiency
 I then recorded down my results working out an average and efficiency; put this data into a table and a graph. Before reaching my conclusion.
Results
Height (cm) 1st drop (cm) 2nd drop (cm) 3rd drop (cm) Average (cm) Efficiency (%)
25 21 20 19 20 80
50 44 37 33 38 76
75 43 51 50 48 64
100 61 65 68 64.66666667 64.66666667
125 73 73 71 72.33333333 57.86666667
150 80 81 81 80.66666667 53.77777778
175 92 90 89 90.33333333 51.61904762
200 102 99 103 101.3333333 50.66666667
Conclusion
As I increased the height that I dropped the ball from I found that the ball bounced to a greater height.
This is because it had more gravitational potential as the height increased so this means it has greater kinetic energy making it bounce higher.
As I increased the height that the ball was
My hypothesis stated walls and partitions will change the path of the steel ball. This is
Hold one ball beside the top of the meter stick so it does not touch. Drop the ball. Have your partner record the height of the first bounce.
The balls velocity and speed is increased significantly in a very brief period, right before the full extension of the elbow.
On the other hand, there are drop balls. Drop balls are the opposite of a riseball, however they are similar to a change up; drop balls are low balls thrown at or near a pitchers maximum speed. Drop balls seem as though they are going to cross the plate as a strike, but then drop before the plate, sometimes plunking into the ground. Therefore, drop balls are caught very similar to how a change up is caught. The balls faster speed makes it more difficult to stop. Dropping to your knees and flipping your glove right away will assist you in stopping the ball and stopping runners from advancing.
controlled variable- throughout this experiment is that i will use the same kind of ball, i will use the same force to hit each trial and i will measure it with the same tool.
If the ball was heated the air pressure within it increased. The ball felt more inflated. The increased air pressure resulting in a higher bounce. Different types of inflatable and non-inflatable could be used in this experiment to see if the results were comparable to the basketball. Different surfaces could also be tested. Further research could benefit athletes as they could expect more consistent performance in sports balls. The research could be expanded to improve the quality-reliability, safety and performance of vehicle tires as well. The next problem addressed could be whether different surfaces could affect the rebound of a ball or the performance of a tire. More research in this question could result in better athletic performance indoors and out. It could provide valuable information for manufacturers of sports equipment. Vehicle tires and other devises that require a constant air pressure in order to perform
Bocce ball is a great way to demonstrate the complex wonders of Newton’s three laws in a simple and understandable way. Bocce ball, which was first documented in the year 5200 B.C., is a sport that was first popularized during the roman empire. It wasn’t more than just a leisurely activity until the game found its way back into Italy, once the Roman empire collapsed. Bocce ball was steadily rising and falling in popularity, until a major resurgence in 1896, when it was admitted an olympic sport, and has been part of the summer olympics ever since. Bocce has really become such a widespread sport because you can participate no matter how old, what your race is, or what gender you are. All you need to do is roll a ball. America seemed very separated from the game until a sweep of popularity in California in 1989. Today there is said to be 25,000,000 bocce ball players in the United States. Many aspects of the game of Bocce ball can be relatable to the simple concepts of Newton’s original three laws, from the balls hitting each other (Newton’s third law), to throwing balls harder to increase the force and then slowing down (Newton’s first and second laws). Throughout this essay, I will not only explain what each of Newton’s three laws mean, but provide a real life example of how it could relate to the game of bocce ball.
For example a tennis ball will bounce higher than a soccer ball because it has more air pressure and it is harder.
“Playing basketball can be hard work. Players not only have to run around the court, but just dribbling the basketball takes some serious effort, too.” (“Surface Science: Where Does a Basketball Bounce Best?”). Energy reserved inside the ball, transfers into Different types of energy (ex. Heat, sound) when the ball hits the ground. But, which type of court restores the most energy back into the ball?
The ball uses this kinetic energy to move up the usually 6 to 7 degree incline to the top of the playing field. The kinetic
(Reference) It doesn’t matter whether the volleyball is being set, served, or passed, it moves both up and forward. This is influenced by the downward pull of gravity and horizontal motion, which is known as projectile motion. The volleyball serve follows a parabolic trajectory, and without air resistance, the volleyball would travel along a parabola, but since there is air resistance, the volleyball travels along a shorter path. (Reference) there are 3 factor that can increase your volleyball serve however if not performed correctly can affect the serve. These 3 are height of release (the higher the better), speed of release (the faster the better) and angle of release (45° for optimum distance). The higher the height of release, the better but it is better because it means the ball travel lower which means the ball is not in the air for long which is harder for the opposition. Generally, the greater the speed of release, the greater the distance gained, the speed of release can improve because it will be more challenging to return. The angle of release improves the accuracy of the shot, which can also make the serve harder to
ball has a lot of mass, it will require more force to accelerate and if the ball has little mass, it
In conclusion a basketball may look sample but it’s is very complex and can be very hard to manage. This project will prove for once and for all if basketballs bounce higher with or without helium. “Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.” stated britannica editor Erik Gregerson. (2015,[online])
The “Just Drop It” investigation was very informative and taught important lessons. The purpose of the experiment was to find the effect of a ball’s drop height on its return bounce height. The experiment was executed by dropping three different balls of different masses at 100, 75, 50, and 25 centimeters. The major finding was the return bounce height depended the most on the ball’s mass and from where it was dropped. The hypothesis that if it the ball was dropped from a higher drop points, it would have a greater bounce height was supported. Other researches had similar data but were never exactly the same. This is most likely because the reading of the return bounce was not exactly correct and neither was the drop height. One thing that
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