From 31076a4f33b06d8d129cea91d75609575580ec82 Mon Sep 17 00:00:00 2001 From: johnruina Date: Sun, 16 Aug 2026 10:32:31 -0400 Subject: [PATCH] 2026-08-16 10:32:30: Translational Kinetic Energy --- .obsidian/workspace.json | 42 +++++++++++++++---- .../Translational Kinetic Energy.md | 16 +++++++ .../Work Energy and Power.md | 3 ++ 3 files changed, 54 insertions(+), 7 deletions(-) create mode 100644 physics/Work Energy and Power/Translational Kinetic Energy.md create mode 100644 physics/Work Energy and Power/Work Energy and Power.md diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json index 06b9727..d2ce0a0 100644 --- a/.obsidian/workspace.json +++ b/.obsidian/workspace.json @@ -48,9 +48,37 @@ "icon": "lucide-file", "title": "Spring Force" } + }, + { + "id": "a43250c06a5815f1", + "type": "leaf", + "state": { + "type": "markdown", + "state": { + "file": "physics/Work Energy and Power/Work Energy and Power.md", + "mode": "source", + "source": false + }, + "icon": "lucide-file", + "title": "Work Energy and Power" + } + }, + { + "id": "c320b38b4fa41973", + "type": "leaf", + "state": { + "type": "markdown", + "state": { + "file": "physics/Work Energy and Power/Translational Kinetic Energy.md", + "mode": "source", + "source": false + }, + "icon": "lucide-file", + "title": "Translational Kinetic Energy" + } } ], - "currentTab": 2 + "currentTab": 4 }, { "id": "25da4f0a48a8e7cd", @@ -234,14 +262,17 @@ "obsidian-excalidraw-plugin:New drawing": false } }, - "active": "33e06a1402832f18", + "active": "c320b38b4fa41973", "lastOpenFiles": [ + "physics/Work Energy and Power/Work Energy and Power.md", + "physics/Work Energy and Power/Translational Kinetic Energy.md", + "physics/Force and Translational Dynamics/Spring Force.md", + "physics/Work Energy and Power", "physics/Force and Translational Dynamics/Gravitational Force.md", "physics/Force and Translational Dynamics/Newton's First Law.md", "physics/Force and Translational Dynamics/Newton's Second Law.md", "physics/Force and Translational Dynamics/Newton's Third Law.md", "physics/Force and Translational Dynamics/System and Center of Mass.md", - "physics/Force and Translational Dynamics/Spring Force.md", "physics/Force and Translational Dynamics/Circular Motion.md", "physics/Force and Translational Dynamics/Forces and Freebody Diagrams.md", "physics/Force and Translational Dynamics/Force and Translational Dynamics.md", @@ -268,9 +299,7 @@ "Assets/Pasted image 20260814125859.png", "Assets/Pasted image 20260815093612.png", "literacy/fallacies.md", - "literacy/literacy.md", "Assets/Pasted image 20260814131131.png", - "chemistry/polar molecules.md", "physics/Force and Translational Dynamics", "Assets/Pasted image 20260813174454.png", "Assets/Pasted image 20260813175101.png", @@ -280,7 +309,6 @@ "Recording 20260716183349.m4a", "Recording 20260716183320.m4a", "biology", - "medical", - "math" + "medical" ] } \ No newline at end of file diff --git a/physics/Work Energy and Power/Translational Kinetic Energy.md b/physics/Work Energy and Power/Translational Kinetic Energy.md new file mode 100644 index 0000000..0a8659e --- /dev/null +++ b/physics/Work Energy and Power/Translational Kinetic Energy.md @@ -0,0 +1,16 @@ +[[Work Energy and Power]] + +Formula is: $$K=\frac{1}{2}mv^2$$ +$K$ in joules +$m$ in kg +$v$ in m/s + +* Kinetic energy is scalar, only magnitude and never negative. +* Because velocity is squared, changing speed affects energy more than changing mass. +* For a system of objects, total kinetic energy is the sum of each object's kinetic energy. +* Different observers in different reference frames can calculate different kinetic energies. + +If a dude standing on earth sees a 1kg ball travelling at 10m/s, he'll calculate it as 50J. If a dude taped to the ball calculates it he'll calculate 0J. If a theoretical god looked at it from a universal standpoint he'd probably calculate like $1*10^6$ Joules due to Earth orbiting the sun and the solar system orbiting the Milky Way. + +In a collision, total energy before and after is consistent in the observers frame. + diff --git a/physics/Work Energy and Power/Work Energy and Power.md b/physics/Work Energy and Power/Work Energy and Power.md new file mode 100644 index 0000000..5c4137c --- /dev/null +++ b/physics/Work Energy and Power/Work Energy and Power.md @@ -0,0 +1,3 @@ +[[physics]] +WEaP +