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  3. AP Physics 1 - Forces II: FBDs, Inclines & Friction

ap physics 1 - forces ii: fbds, inclines & friction

originally streamed in 2019 with Christian HornerTeacher
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Learn how to analyze forces in AP Physics 1 with this detailed review of free body diagrams, sum of forces, and Newton's laws. You'll work through incline problems, Atwood's machines, and friction scenarios—perfect for Unit 2 exam prep. This video b ...more

covered in this stream

units
Unit 1 – KinematicsUnit 2 – Force and Translational Dynamics
topics
1.2 Displacement, Velocity, and Acceleration1.3 Representing Motion2.2 Forces and Free-Body Diagrams2.4 Newton's First Law2.5 Newton's Second Law2.7 Kinetic and Static Friction

timestamps

  • 0:00

    Free Body Diagrams

  • 0:30

    Component Diagrams

  • 1:00

    Sum of Forces

  • 2:02

    Incline with Friction Practice

  • 3:06

    FBD on Box

  • 4:08

    Center of Mass Forces

  • 5:10

    Static Friction

  • 6:12

    Component Diagram Setup

  • 7:16

    Angle Placement

  • 8:50

    Rotation Trick

  • 9:54

    Sine and Cosine Components

  • 10:26

    Atwood's Machine FBD

  • 12:00

    Horizontal Atwood with Friction

  • 14:40

    AP Problem Velocity Graph

  • 16:16

    Sketch Acceleration Graph

  • 18:53

    Constant Acceleration Lines

  • 21:28

    Position at T=5 Calculation

  • 24:03

    Zero Net Force Segment

  • 26:43

    Net Force First 3 Seconds

  • 28:19

    Area Under VT Graph

  • 29:53

    Incline Box Problem

  • 31:28

    Incline FBD Forces

  • 34:07

    Incline Components

  • 36:14

    Normal Force Derivation

  • 39:20

    Normal Force Calculation

  • 40:57

    Gravity Parallel Formula

  • 41:27

    Gravity Parallel Calculation

  • 43:02

    Friction Force Equation

  • 45:38

    Friction Force Calculation

  • 46:10

    Applied Force Calculation

  • 47:48

    Force of Gravity Explanation

  • 48:53

    Wrapping Up Questions

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Study Content & Tools

Study GuidesFRQs + AI ScoringAP Essay Grader for StudentsAI Grading for TeachersPractice QuestionsGlossaryScore Calculators

Company

What's New?PricingBulk DiscountsTestimonialsFAQsEmail us

Resources

AP Exam Schedule 2027AP Exam AccommodationsAP ClassesAP ClassroomEasiest AP ClassesHardest AP ClassesAP vs IBAP vs Dual EnrollmentAP vs Honors ClassesAP Scholar Awards

history

🌎 ap world history🇺🇸 ap us history🇪🇺 ap european history

social science

✊🏿 ap african american studies🗳️ ap comparative government🚜 ap human geography💶 ap macroeconomics🤑 ap microeconomics🧠 ap psychology👩🏾‍⚖️ ap us government

english & capstone

✍🏽 ap english language📚 ap english literature🔍 ap research💬 ap seminar

arts

🎨 ap art & design🖼️ ap art history🎵 ap music theory

science

🧬 ap biology🧪 ap chemistry♻️ ap environmental science🎡 ap physics 1🧲 ap physics 2💡 ap physics c: e&m⚙️ ap physics c: mechanics

math & computer science

🧮 ap calculus ab♾️ ap calculus bc📐 ap precalculus📊 ap statistics💻 ap computer science a⌨️ ap computer science p

world languages

🇨🇳 ap chinese🇫🇷 ap french🇩🇪 ap german🇮🇹 ap italian🇯🇵 ap japanese🏛️ ap latin🇪🇸 ap spanish language💃🏽 ap spanish literature

career kickstart

💼 ap business with personal finance🔒 ap cybersecurity

go beyond AP

high school exams

✏️ PSAT🎓 Digital SAT🎒 ACT

honors classes

🍬 honors algebra II🫀 honors anatomy🐇 honors biology👩🏽‍🔬 honors chemistry💲 honors economics📐 honors geometry⚾️ honors physics📏 honors pre-calculus📊 honors statistics🗳️ honors us government🇺🇸 honors us history🌎 honors world history

college classes

👩🏽‍🎤 arts👔 business🎤 communications🏗️ engineering📓 humanities➗ math🧑🏽‍🔬 science💶 social science

hs classes

🏛️ alabama history⛰️ appalachian studies🌴 california history🌍 earth science🌐 ethnic studies🐊 florida history🍑 georgia history🌎 global studies🌺 hawaiian studies📰 journalism🪶 native american studies🌵 new mexico history🤠 oklahoma history⚗️ physical science🎙️ speech and debate🤝 texas government🤠 texas history🌲 washington state history🕊️ world religions
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© 2026 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.