Translations

Code	Language		Translator	Run

Credits

weelookang@gmail.com; Cleve Chia

1. Introduction:

This briefing document provides an overview of the "Relative Projection Height Projectile Motion Model for Exercise Sports Science" and its associated interactive simulation tool. These resources, developed by weelookang@gmail.com and Cleve Chia, offer an open-source approach to understanding and exploring projectile motion in the context of exercise and sports science. The materials aim to facilitate learning about the impact of relative projection height on projectile trajectories.

2. Main Themes and Important Ideas:

The core focus of these resources is to model and simulate projectile motion where the launch point and landing point are at different vertical heights – termed "relative projection height." This is particularly relevant in sports where objects are often thrown, kicked, or launched from a height above or below the landing level (e.g., throwing a basketball into a hoop, kicking a ball uphill or downhill).

Key Themes and Ideas:

• Relative Projection Height: The central concept explored is how the difference in vertical height between the launch and landing points influences projectile motion parameters such as range, time of flight, and maximum height.
• Simulation-Based Learning: The JavaScript HTML5 applet provides an interactive platform for users to manipulate variables (presumably launch angle, initial velocity, and relative projection height, although these are not explicitly stated in the provided excerpts) and observe the resulting projectile trajectory. This hands-on approach promotes active learning and a deeper understanding of the underlying physics principles.
• Open Educational Resources (OER): The materials are presented as OER, emphasizing their accessibility and potential for integration into educational settings. The Creative Commons Attribution license allows for sharing and adaptation with proper attribution.
• Application to Exercise Sports Science: The title explicitly highlights the relevance of this model to the field of exercise and sports science, suggesting its utility in analyzing and optimizing sports techniques involving projectile motion.

3. Key Facts and Insights from the Sources:

• Authorship and Licensing: The model and materials are attributed to weelookang@gmail.com and Cleve Chia, and are released under a Creative Commons Attribution license (© 2020). The simulation is compiled with EJS 6.1 BETA.
• Interactive Simulation: A JavaScript HTML5 Applet Simulation Model is available and can be embedded into webpages using an iframe. This allows for easy integration into online learning platforms or resources.
• Sample Learning Goals and Questions: The excerpts provide examples of learning goals and questions that can be addressed using the simulation tool:
• Question 1: "Estimate the maximum range of the football when the relative projection height is 0 m." This focuses on understanding the baseline scenario where launch and landing are at the same height. The acceptable answer range (20-21 m) suggests pre-calculated or simulated results.
• Question 2: "Sam claimed that the relative projection height does not affected maximum range of the football. Do you agree? Explain." This directly probes the user's understanding of the impact of relative projection height. The provided answer explicitly disagrees with Sam's claim, stating: "From the simulation, as the relative projection height increases from 1 to 5 m, the maximum range also increases from 20 to 24 m." This demonstrates a direct positive correlation between relative projection height and maximum range in the tested scenario.
• Question 3: "Use the tool above, suggest whether the time of flight increase/decease/constant, as the relative projection height increases." The provided answer indicates that "time of flight increases" with increasing relative projection height.
• Accessibility and Credits: The resource is part of "Open Educational Resources / Open Source Physics @ Singapore." Credits are given to the developers, and contact information is provided.
• Related Resources: The webpage listing the simulation model includes a vast list of other physics and educational simulations and resources developed under the "Open Source Physics @ Singapore" initiative. This suggests a broader commitment to creating and sharing interactive learning tools. Examples include simulations on various physics topics (mechanics, waves, optics, electromagnetism) and educational games for different subjects (mathematics, languages, chemistry).

4. Quotes from Original Sources:

• (Title): "Relative Projection Height Projectile Motion Model for Exercise Sports Science"
• (License Information): "© 2020, creative common attribution."
• (Learning Goal Example): "Estimate the maximum range of the football when the relative projection height is 0 m."
• (Answer to Sample Question 2): "disagree. From the simulation, as the relative projection height increases from 1 to 5 m, the maximum range also increases from 20 to 24 m."
• (Answer to Sample Question 3): "time of flight increases"
• (Embed Code Snippet): <iframe width="100%" height="100%" src="https://iwant2study.org/lookangejss/physicaleducation/ejss_model_projectileESSrelativeprojectionheight/projectileESSrelativeprojectionheight_Simulation.xhtml " frameborder="0"></iframe>

5. Implications and Potential Uses:

• Educational Tool: This simulation model offers a valuable interactive tool for teaching and learning about projectile motion in physics and sports science courses. Students can experiment with different relative projection heights and observe their impact on key trajectory parameters, leading to a more intuitive understanding of the concepts.
• Sports Performance Analysis: Coaches and athletes could potentially use this model to analyze and optimize throwing, kicking, or launching techniques where the launch and landing heights differ.
• Research and Development: The open-source nature of the model may allow for further development and customization to explore more complex scenarios or incorporate additional factors relevant to specific sports.
• Curriculum Integration: The provided sample learning goals and questions offer a starting point for educators to integrate this resource into their existing curriculum and assessment strategies.

6. Further Considerations:

• Model Limitations: The excerpts do not detail the underlying physics model used in the simulation. It would be beneficial to understand the assumptions made (e.g., neglecting air resistance) to determine the model's applicability to real-world scenarios.
• User Interface and Features: The effectiveness of the simulation as a learning tool will depend on its user interface and the range of variables that users can manipulate. Accessing and interacting with the simulation would provide a better understanding of its capabilities.
• Supporting Materials: While the excerpts mention "Sample Learning Goals" and "Possible Questions," the availability of more comprehensive supporting materials (e.g., lesson plans, worksheets, theoretical background) would enhance the educational value of this resource.

7. Conclusion:

The "Relative Projection Height Projectile Motion Model for Exercise Sports Science" and its associated JavaScript HTML5 applet simulation represent a valuable open educational resource for exploring the impact of relative projection height on projectile motion. The interactive nature of the simulation, coupled with the provided learning goals and questions, offers significant potential for enhancing learning and understanding in physics and sports science education. The open-source nature also encourages further adaptation and development within the educational community.

 

Study Guide: Relative Projection Height Projectile Motion

Overview

This study guide is designed to help you review the concepts related to projectile motion, specifically focusing on the influence of relative projection height, as presented in the provided source materials. The materials include excerpts from a paper and a description of an interactive simulation tool. Understanding these materials will enable you to analyze how changing the starting height of a projectile affects its trajectory, range, and time of flight.

Key Concepts

• Projectile Motion: The motion of an object thrown or projected into the air, subject only to the acceleration of gravity.
• Relative Projection Height: The vertical difference between the launch point and the landing point of a projectile.
• Maximum Range: The greatest horizontal distance a projectile travels before landing.
• Time of Flight: The total time a projectile spends in the air.
• Simulation Model: A computer-based tool that allows users to manipulate variables and observe the resulting behavior of a system (in this case, projectile motion).
• Variables in Projectile Motion: Initial velocity (magnitude and angle), launch height, and acceleration due to gravity.

Review Questions

Consider the following questions as you review the source material and the key concepts:

1. What are the primary factors that influence the trajectory of a projectile?
2. How does the relative projection height differ from the absolute launch height?
3. Based on the provided simulation description, what variables can be adjusted?
4. What were the findings regarding the relationship between relative projection height and maximum range in the sample questions?
5. What conclusion was drawn about the relationship between relative projection height and time of flight?
6. How can a simulation model aid in understanding the principles of projectile motion?
7. What are some real-world examples where relative projection height plays a significant role in projectile motion?
8. According to the license information, how can the provided resources be used and shared?
9. What are the stated sample learning goals related to the simulation tool?
10. What evidence from the provided text suggests that the relative projection height does or does not affect the maximum range?

Quiz

Answer the following questions in 2-3 sentences each.

1. Define relative projection height in the context of projectile motion. How does it relate to the starting and ending vertical positions of a projectile?
2. Based on the "Possible Question 2" and its answer, explain whether Sam's claim that relative projection height does not affect the maximum range of a football is correct. Provide evidence from the simulation results.
3. According to "Possible Question 3," what is the relationship between the relative projection height of a projectile and its time of flight, as suggested by the simulation tool?
4. Identify at least two variables, besides relative projection height, that would influence the maximum range of a projectile in a real-world scenario. Briefly explain their effect.
5. What is the purpose of the JavaScript HTML5 Applet Simulation Model described in the text? How can users interact with such a tool to learn about projectile motion?
6. What is the licensing agreement under which the "Relative Projection Height Projectile Motion Model" is released? What does this imply for its use and distribution?
7. The "Sample Learning Goals" section includes a question about estimating the maximum range when the relative projection height is 0 m. What does a relative projection height of 0 m signify?
8. Besides the specific projectile motion model, what other types of physics or mathematics simulations are listed on the "Open Educational Resources / Open Source Physics @ Singapore" page? Provide two examples.
9. Who are credited as the creators or contributors to the "Relative projection height projectile motion model for exercise sports science" according to the provided texts?
10. How can embedding the provided iframe code be useful for educators or website owners who want to share the projectile motion simulation?

Quiz Answer Key

1. Relative projection height is the vertical difference between the initial launch height and the final landing height of a projectile. A positive relative projection height means the launch point is higher than the landing point, while a negative height means the launch point is lower. Zero relative projection height indicates the projectile lands at the same vertical level from which it was launched.
2. Sam's claim is incorrect. The simulation results, as indicated in the answer to "Possible Question 2," show that as the relative projection height increases from 1 to 5 meters, the maximum range of the football also increases from 20 to 24 meters, demonstrating a direct positive relationship.
3. Based on "Possible Question 3," the simulation suggests that the time of flight of a projectile increases as the relative projection height increases. This implies that launching from a greater height results in the projectile staying in the air for a longer duration.
4. Two other variables that influence the maximum range are the initial velocity and the launch angle. A greater initial velocity generally leads to a larger range, and for a level launch, an optimal launch angle of 45 degrees typically maximizes the range (ignoring air resistance).
5. The purpose of the simulation model is to provide an interactive tool for learning about how relative projection height affects projectile motion in exercise and sports science. Users can likely adjust parameters such as initial velocity, launch angle, and relative projection height to observe the resulting changes in the projectile's trajectory, range, and time of flight.
6. The "Relative Projection Height Projectile Motion Model" is released under a Creative Commons Attribution-Share Alike 4.0 Singapore License. This license allows others to use, share, and adapt the work, even commercially, as long as they attribute the original authors and distribute any adaptations under the same or a compatible license.
7. A relative projection height of 0 m signifies that the projectile is launched and lands at the same vertical height. This is a common simplified scenario in introductory physics problems involving projectile motion on level ground.
8. The "Open Educational Resources / Open Source Physics @ Singapore" page lists various other simulations, including "Friction with energy for pri sch JavaScript HTML5 Applet Simulation Model" and "Buoyancy JavaScript HTML5 Applet Simulation Model," indicating a wide range of physics topics covered.
9. The creators or contributors credited in the provided texts are weelookang@gmail.com and Cleve Chia.
10. Embedding the iframe code allows educators or website owners to directly integrate the interactive projectile motion simulation into their webpages. This provides users with easy access to the tool without having to navigate to an external website, enhancing the learning experience and engagement.

Essay Format Questions

1. Discuss the significance of relative projection height in various sports and exercise activities involving projectiles. Provide specific examples and explain how athletes might utilize or account for this factor to improve performance.
2. Analyze the relationship between relative projection height and the key parameters of projectile motion (maximum range, time of flight, trajectory). Based on the provided information and your understanding of physics principles, explain the underlying reasons for these relationships.
3. Evaluate the effectiveness of using interactive simulation models, such as the one described, as a pedagogical tool for teaching and learning about projectile motion. What are the advantages and potential limitations of this approach compared to traditional methods?
4. Considering real-world scenarios, what other factors not explicitly addressed in the simple projectile motion model (e.g., air resistance, spin) might significantly influence the trajectory of a projectile launched with a relative projection height? Discuss their potential impact.
5. Explore the concept of "Open Educational Resources" (OER) in the context of science education, using the provided materials as an example. Discuss the benefits and challenges of creating and utilizing OER for both educators and learners.

Glossary of Key Terms

• Projectile: An object propelled through the air by an applied force and thereafter subject only to the acceleration of gravity and air resistance (often idealized to only gravity).
• Trajectory: The path followed by a projectile as it moves through the air.
• Launch Angle: The angle at which a projectile is launched with respect to the horizontal.
• Initial Velocity: The velocity (both speed and direction) of a projectile at the moment of launch.
• Acceleration due to Gravity (g): The constant acceleration experienced by objects near the Earth's surface due to the force of gravity, approximately 9.8 m/s² downwards.
• Open Educational Resources (OER): Teaching, learning, and research materials in any medium – digital or otherwise – that reside in the public domain or have been released under an open license that permits no-cost access, use, adaptation, and redistribution by others with no or limited restrictions.
• JavaScript HTML5 Applet: A small, interactive computer program embedded in a webpage, created using JavaScript and HTML5 technologies, often used for simulations and interactive learning experiences.
• Simulation: A computer-based representation of a real-world system or process that allows users to manipulate variables and observe the outcomes.
• Embed: To integrate content, such as a simulation or video, from one website or source into another, often using code like an iframe.
• Creative Commons License: A public copyright license that enables the free distribution of an otherwise copyrighted work. Different Creative Commons licenses specify varying permissions regarding use, adaptation, and commercialization.

Sample Learning Goals

[text]

Possible Question 1. Estimate the maximum range of the football when the relative projection height is 0 m. 

acceptable answers from 20.39 m or 20 to 21 m.

Possible Question 2. Sam claimed that the relative projection height does not affected maximum range of the football. Do you agree? Explain.

disagree. From the simulation, as the relative projection height increases from 1 to 5 m, the maximum range also increases from 20 to 24 m.

Possible Question 3. Use the tool above, suggest whether the time of flight increase/decease/constant, as the relative projection height increases.

time of flight increases

Video

[text]

 Version

 

Other Resources

[text]