# Physics Physics is the study of the motion and nature of objects. Obviously, this plays a huge role in Robotics. One of the primary concepts from physics is the idea of force. At a base level, a **force is a push or pull that makes an object change direction.** * The wheels of the robot apply a force on the ground, which pushes the robot forward * Rubber bands impart force on a catapult arm, causing it to slam upward * An intake exerts a force on a game object, making it move in a different direction The two most important applications of force are **torque** and **stress forces**. Torque is simply rotational force, and stress forces are internal to the robot. {% content-ref url="/pages/s0gyeyJwu9JsAjlD9hpF" %} [Torque](/ascend/other/physics/torque.md) {% endcontent-ref %} {% content-ref url="/pages/94OK0Ru1JlUr9Ndp4OMF" %} [Stress Forces](/ascend/other/physics/stress-forces.md) {% endcontent-ref %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://ascendrobotics.gitbook.io/ascend/other/physics.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.