# Physics Explained Through a Video Game

Bonk.io, a multiplayer physics browser game that runs on the Box2D physics engine. Materials from this video game are used to explain real-world physics concepts.

## Table of Contents

Note that the Table of Contents is subject to change and may not reflect recent structural changes.

### Unit 1: Kinematics

Topic 1.1 - Displacement$^1$
Topic 1.2 - Calculating Displacement$^1$
Topic 1.3 - Speed and Average Velocity$^1$
Topic 1.4 - 1-D Uniformly Accelerated Motion
Topic 1.5 - Motion in 2 Dimensions

### Unit 2: Forces and Newton’s Laws

Topic 2.1 - Systems and Center of Mass
Topic 2.2 - Forces and Free Body Diagrams
Topic 2.3 - Newton's Second Law
Topic 2.4 - Newton's First and Third Laws$^2$
Topic 2.5 - Resistive and Frictional Forces
Topic 2.6 - Spring Forces
Topic 2.7 - Tension and Circular Forces

### Unit 3: Work and Energy

Topic 3.1 - Introduction to Work$^3$
Topic 3.2 - Introduction to Kinetic and Potential Energy
Topic 3.3 - Conservation of Energy
Topic 3.4 - Conservative and Nonconservative Forces
Topic 3.5 - Power

### Unit 4: Linear Momentum and Collisions

Topic 4.1 - Introduction to Linear Momentum
Topic 4.2 - Impulse (Change of Momentum)
Topic 4.3 - Inelastic Collisions
Topic 4.4 - Elastic Collisions

### Unit 5: Statics and Rotation

Topic 5.1 - Rotational Kinematics
Topic 5.2 - Torque and Rotational Inertia
Topic 5.3 - Translational and Rotational Equilibrium
Topic 5.4 - Angular Momentum
Topic 5.5 - Rotational Kinetic Energy
Topic 5.6 - Rolling Objects

### Unit 6: Springs and Oscillations

Topic 6.1 - Introduction to Simple Harmonic Motion
Topic 6.2 - Applying SHM
Topic 6.3 - Physical Pendulums

### Unit 7: Gravitation

Topic 7.1 - Newton's Law of Universal Gravitation
Topic 7.2 - Kepler's Laws
Known existing issues:
$^1$ These topics were created before adopting an improved article structure. As such, these topics have fewer resources, such as not having end-of-section practice problems.
$^2$ For this topic, the Example 4 contains a mistake with the FBD of the koi fish and lily pad after collision. They should be treated as a single system for the problem. Also, editing likely needs to be done for clarity and accuracy with the remainder of the example.
$^3$ For this section, there are relatively few in-depth examples, especially given the large scope of the topic. Also, the discussion of work as a scalar value probably can be simplified.

## Prior Knowledge

For this textbook, it is recommended that you have taken at least one year each of high-school leveled algebra and geometry.

## Content Credits

* This project partially contains text, images, and other media that was originally published on services owned by Fandom, Inc. under a CC-BY-SA license. Correspondingly, all content within this textbook will be credited to be taken from Fandom, Inc. when appropriate.
* Some media for this project uses user-generated content created by other players on the Bonk.io website. For this content, in-text attribution is provided with the title of the user-generated content and the username of the player. Because of Wikimedia Commons' requirement for all uploaded files to be freely licensed, approval from each user is gained for their work to be dedicated under a CC0 - Public Domain license. To verify this for each user, please refer to https://discord.gg/QKrdE45y6h. On there, each user lists their account(s), provides a dedication for their media to be uploaded under the public domain, and video(s) showing ownership of each account are provided.
* All of the uploaded media for the project has been under fair use. However, some media likely does not meet the stricter free licensing requirements provided by Wikimedia Commons. At this time, any materials that contain user-generated content to any extent (without the approval of the content owner to release their work under a free license) are in the process of being removed. All topics either will be replaced with only freely-licensed content or be temporarily missing some uploaded media.
* ↑ "Physics, Explained Through Bonk.io". Bonk.io Wiki. Retrieved 2024-07-05.