Investigatory project

Topics: Balls, Energy, Ball Pages: 11 (1501 words) Published: June 26, 2014
The Physics of Balls Bouncing off at Surfaces

Leader:Mr. Edrian Pantas
Contador, Love S.
Espiritu, Ian Timothy
Ecube, Lynn Kristine
Magangcong, Ahlya
Oliman, Genie Rose

Chapter 1

Bouncing ball physics is an interesting subject of analysis, demonstrating several interesting dynamics principle related to acceleration. Almost everybody, at some point in their lives, has bounced a rubber ball against the wall or floor and observed its motion. Normally we don`t think about the details of bouncing balls physics too much as it`s fairly obvious what is happening, the ball basically rebounds off a surface at a speed proportional to how fast it is thrown. But what isn`t known to most is what is happening to the ball before, during and after its brief impact on its surface. Statement of the Problem

This study aims to determine the difference of balls bounce with respect to its different aspects. More specifically, it sought to answer the following questions 1. Does the size of the ball affect the bounce of the ball?

2. Does the weight of the ball affect the bounce of the ball? 3. Does the gravity affect the bounce of the ball?
4. Do the starting point/ height of the ball from the surface affect the bounce of the ball? 5. Does the temperature of the surface affect the bounce of the ball? Significance of the Study
This study will help the players in any ball games specifically, soccer, baseball, badminton, tennis, table tennis, basketball, volleyball, sepak takraw, etc. in winning a game. If the player of such games know the physics behind the ball bouncing off as surfaces, they can calculate when to hit the ball, therefore they got an advantage from their opponent who`s not aware about this idea. The next researchers about physics of ball bouncing will also benefit from this study. They will have idea from this study, so that it won`t be that difficult for them to study the physics of bouncing balls, and they could just continue the study by trying other methods or paradigm to investigate about ball. Scope and Delimitations

This study only covers the physics balls and the surface. Improvised balls other than physics balls are not counted in this study. The selection of surface also included in the study, as well as all the variables that affect the bounce of the ball, such as; size of the ball, weight of the ball, gravity, height of the ball from surface and also temperature. Chapter 2

Related Studies
Stated on the previous study entitled “Science Project on a Golf Ball`s Bounce”, a basic comparison of the various bouncing abilities of several kinds of balls allow students to compare the bouncing properties of a golf ball to the properties of other balls. They provide several kinds of balls; golf ball, basketball, baseball, softball, tennis ball, rubber ball, soccer ball, and volleyball. They did many procedures in measuring the height of the bounce of the ball, students used the balls to investigate the inner materials, they compare the data gathered, and after the comparison, students develop an optimal design for a golf ball that would create the greatest bounce.

According to a previous study entitled “Frozen Baseballs”, weather can have an effect on a ball`s ability to bounce. In-fact, on cold days, balls tend to lose some ability to bounce. Test this with two identical baseballs. Place one of the baseballs in the freezer for at least an hour. Remove the baseball from freezer and drop it along with the room-temperature baseball. According to Exploratorium, the room-temperature ball bounces 80 percent higher than the frozen baseball. This occurs because the baseball loses plasticity when frozen.

A previous study entitled “Air Pressure Experiment” stated that outside force such as gravity and friction aren`t the only factors affecting the bounce of a ball. The characteristics of each individual ball also play a role on a ball`s bounce. Test this theory by filling...
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