Translations

Code	Language		Translator	Run

Credits

This email address is being protected from spambots. You need JavaScript enabled to view it.

 

This document provides an overview of the webpage "Projectile Motion with Y Displacement, Velocity, Acceleration Graph JavaScript HTML5 Applet Simulation Model" found on the Open Educational Resources / Open Source Physics @ Singapore website.

Main Theme: This webpage showcases an interactive HTML5 applet simulating projectile motion, accompanied by graphical representations of displacement, velocity, and acceleration. It serves as an educational resource for physics students at the secondary and junior college levels.

Key Features:

• Interactive Simulation: The applet allows users to manipulate variables and observe the resulting projectile trajectory in real-time.
• Graphical Analysis: The simulation includes graphs illustrating the projectile's vertical displacement, velocity, and acceleration, enabling students to visualize the relationships between these quantities.
• Cross-Platform Compatibility: Designed using HTML5 and JavaScript, the applet runs seamlessly on various devices, including smartphones, tablets, laptops, and desktops across different operating systems.
• Open Source and Educational Focus: Aligning with the website's mission, the resource is open-source and promotes accessible physics education.

Important Facts:

• The applet was created using Easy JavaScript Simulations (EJS).
• The webpage provides an embed code, allowing the simulation to be integrated into other webpages.
• Several translations of the applet are available.
• The resource is attributed to Loo Kang Wee and is licensed under Creative Commons Attribution.
• The webpage links to numerous other physics simulations and resources.

Projectile Motion Study Guide

Quiz

Instructions: Answer the following questions in 2-3 sentences each.

1. What is projectile motion?
2. What are the two independent components of projectile motion?
3. How does the acceleration due to gravity affect the vertical component of projectile motion?
4. What is the shape of the trajectory of a projectile?
5. At what point in a projectile's trajectory is the vertical velocity zero?
6. What factors influence the range of a projectile?
7. How does the launch angle affect the height and time of flight of a projectile?
8. If a projectile is launched horizontally, what is its initial vertical velocity?
9. What is the difference between the time of flight and the time it takes for a projectile to reach its maximum height?
10. How can simulations and models help us understand projectile motion?

Quiz Answer Key

1. Projectile motion is the motion of an object that is projected into the air and is subject only to the acceleration of gravity. The object is called a projectile, and its path is called its trajectory.
2. The two independent components of projectile motion are horizontal and vertical motion. The horizontal motion is constant velocity, while the vertical motion is constant acceleration due to gravity.
3. The acceleration due to gravity (g) acts downwards, causing the vertical velocity of the projectile to change continuously. The projectile slows down as it moves upward and speeds up as it moves downward.
4. The trajectory of a projectile is a parabola. This is because the horizontal velocity is constant, while the vertical velocity changes at a constant rate.
5. The vertical velocity of a projectile is zero at the highest point of its trajectory. At this point, the projectile changes direction from moving upwards to moving downwards.
6. The range of a projectile is influenced by its initial velocity, launch angle, and the acceleration due to gravity. A higher initial velocity and a launch angle closer to 45 degrees will result in a longer range.
7. The launch angle affects both the height and time of flight of a projectile. A higher launch angle will result in a greater maximum height and a longer time of flight.
8. If a projectile is launched horizontally, its initial vertical velocity is zero. The projectile will only start accelerating downwards due to gravity once launched.
9. The time of flight is the total time the projectile is in the air, while the time to reach maximum height is half of the total time of flight. The projectile takes the same amount of time to go up to its maximum height as it does to come back down.
10. Simulations and models can help us visualize and understand the complex relationships between different variables in projectile motion. They allow us to manipulate variables and observe their effect on the projectile's trajectory, helping to develop a deeper understanding of the concepts involved.

Essay Questions

1. Discuss the independence of horizontal and vertical motion in projectile motion. How does this independence simplify the analysis of projectile motion?
2. Explain how the launch angle of a projectile affects its range, maximum height, and time of flight. What launch angle results in the maximum range for a projectile?
3. Describe the energy transformations that occur during the flight of a projectile. How do these transformations relate to the conservation of energy?
4. Compare and contrast projectile motion with uniform circular motion. What are the key similarities and differences between these two types of motion?
5. Discuss the limitations of the basic projectile motion model. What factors are not considered in this model, and how might these factors affect the actual trajectory of a projectile in real-world situations?

Glossary of Key Terms

Projectile Motion: The motion of an object launched into the air and subject only to the force of gravity.

Trajectory: The curved path followed by a projectile.

Horizontal Component: The component of motion parallel to the ground. In projectile motion, the horizontal velocity is constant.

Vertical Component: The component of motion perpendicular to the ground. In projectile motion, the vertical velocity changes due to the acceleration of gravity.

Launch Angle: The angle at which a projectile is launched with respect to the horizontal.

Initial Velocity: The velocity of the projectile at the moment it is launched.

Acceleration due to Gravity (g): The acceleration experienced by objects near the Earth's surface due to the Earth's gravitational pull, approximately 9.8 m/s².

Time of Flight: The total time a projectile spends in the air.

Maximum Height: The highest point reached by a projectile in its trajectory.

Range: The horizontal distance traveled by a projectile before it lands.

Parabola: The symmetrical curved shape of the trajectory of a projectile.

Simulation: A computer program or model that represents a real-world phenomenon, such as projectile motion, allowing users to manipulate variables and observe their effects.

Overall, this webpage offers a valuable interactive tool for physics education. The combination of a visually engaging simulation and detailed graphical analysis makes it a comprehensive resource for understanding projectile motion.

Video

 Ejs Open Source Creative Commons Attribute Projectile motion Java Applet by Loo Kang Wee

Versions

1. http://weelookang.blogspot.sg/2013/12/ejss-free-fall-model.html blogpost on earlier JavaScript version
2. http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=745.0 NTNU Java Virtual Lab version Ejs Open Source Projectile Motion with Drag Java Applet by Loo Kang Wee

 

Other resources

1. http://www.compadre.org/Physlets/mechanics/illustration3_4.cfm Illustration 3.4: Projectile Motion by W. Christian and M. Belloni 
2. http://physics.weber.edu/amiri/director-dcrversion/newversion/airresi/AirResi_1.0.html Trajectory of a ball with air resistance by Farhang Amiri
3. http://www.walter-fendt.de/html5/phen/projectile_en.htm HTML5 version of Projectile Motion by Walter Fendt
4. http://www.compadre.org/OSP/items/detail.cfm?ID=7299&S=7 Ejs Intro 2DMotionLab Model by  Anne Cox, Wolfgang Christian, and Mario Belloni 
5. http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=623.0 Projectile motion with equations by Fu-Kwun Hwang
6. http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1832.0 Airdrag by Fu-Kwun Hwang and ahmedelshfie
7. https://www.geogebra.org/m/whqAWVQM by shanlee
8. http://archive.geogebra.org/en/upload/files/english/lewws/basketballsimulation_counterspeed_simulationspeed_updated1r.html Simulation of BasketBall Throw by Lew W. S.
9. http://ophysics.com/k8.html by This email address is being protected from spambots. You need JavaScript enabled to view it.
10. http://ophysics.com/k9.html by This email address is being protected from spambots. You need JavaScript enabled to view it.
11. https://sites.google.com/view/matholicism/models/projectile-motion?authuser=0 by Chen