free diagnosticupgrade
  1. browse cram archives
  2. ap physics 1
  3. AP Physics 1 - Newton's Third Law: Action-Reaction Pairs

ap physics 1 - newton's third law: action-reaction pairs

originally streamed in 2020 with Jacob JeffriesStudent
subscribe
Learn why action-reaction force pairs don't cancel out in Newton's Third Law for AP Physics 1. This detailed breakdown covers the most common misconception students face on the AP exam, walking you through the mathematical proof and real-world exampl ...more

covered in this stream

units
Unit 2 – Force and Translational Dynamics
topics
2.3 Newton's Third Law2.2 Forces and Free-Body Diagrams

timestamps

  • 0:00

    Introduction to Presentation

  • 0:30

    Proving Newton's Third Law

  • 1:02

    Proof Assumptions

  • 1:33

    Defining Momentum

  • 2:40

    Forces Between Particles

  • 3:40

    Total System Momentum

  • 4:41

    Center of Mass Velocity

  • 6:51

    System Acceleration

  • 7:55

    Net Forces on Masses

  • 9:30

    External Forces Sum

  • 10:01

    Proof Conclusion

  • 11:35

    Assumptions and Generality

  • 12:37

    Third Law Pairs

  • 14:10

    Book on Table Example

  • 15:47

    Table Free Body Diagram

  • 16:56

    Gravity and Earth Pairs

  • 18:02

    Springs Example

  • 19:42

    Spring Interactions Analysis

  • 21:50

    Box on Incline Example

  • 23:58

    Gravity Components

  • 25:00

    Plane Free Body Diagram

  • 26:32

    Conceptual Importance

  • 27:33

    Water Molecule Example

  • 29:37

    Misconceptions Summary

  • 30:38

    Questions Invitation and Closing

more on these topics
AP Physics 1 CRAM – Units 1-2: Kinematics & Dynamics

2:59:21

AP Physics 1 CRAM – Units 1-2: Kinematics & Dynamics

2023 · Anastasia Bolotskikh, Shagun Khare, Tammy Mathews, and Zeke Reyff

AP Physics 1 CRAM – Forces, Newton's Laws & FBDs

1:06:45

AP Physics 1 CRAM – Forces, Newton's Laws & FBDs

2021 · Christian Horner

AP Physics 1 - Units 1-4 Review: Kinematics to Energy

1:07:08

AP Physics 1 - Units 1-4 Review: Kinematics to Energy

2020 · Kelley Commeford

AP Physics 1 CRAM – Dynamics & Force Analysis

1:01:16

AP Physics 1 CRAM – Dynamics & Force Analysis

2020 · Peter Apps

AP Physics 1 - Q&A: Newton's Laws & Problem-Solving

1:00:50

AP Physics 1 - Q&A: Newton's Laws & Problem-Solving

2019 · Casey Li

up next in ap physics 1
AP Physics 1 - Kinematics: Position & Velocity Graphs

1:02:50

AP Physics 1 - Kinematics: Position & Velocity Graphs

2023 · Shagun Khare

AP Physics 1 - Q&A: Momentum & Collisions

1:01:50

AP Physics 1 - Q&A: Momentum & Collisions

2020 · Peter Apps

AP Physics 1 CRAM – Kinematics & Projectile Motion

1:08:06

AP Physics 1 CRAM – Kinematics & Projectile Motion

2020 · Peter Apps

AP Physics - Q&A: Rotational Motion & Angular Velocity

42:58

AP Physics - Q&A: Rotational Motion & Angular Velocity

2020 · Peter Apps

AP Physics 1 - Free-Body Diagrams & Force Vectors

57:11

AP Physics 1 - Free-Body Diagrams & Force Vectors

2020 · Peter Apps

more from Jacob Jeffries
AP Physics 1 - Circular Motion Applications

47:54

AP Physics 1 - Circular Motion Applications

2020 · Jacob Jeffries

AP Chemistry - Periodic Trends

1:01:07

AP Chemistry - Periodic Trends

2020 · Jacob Jeffries

AP Physics 1 - Q&A: Momentum, Collisions & Impulse

1:06:51

AP Physics 1 - Q&A: Momentum, Collisions & Impulse

2020 · Jacob Jeffries & Erin Brzusek

AP Chemistry - Atomic Structure & Mass Spectroscopy

49:53

AP Chemistry - Atomic Structure & Mass Spectroscopy

2020 · Jacob Jeffries

AP Physics 1 - Lab Design: Forces & Hooke's Law

1:01:40

AP Physics 1 - Lab Design: Forces & Hooke's Law

2019 · Jacob Jeffries

Fiveable

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

every AP exam is fiveable

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

RefundsTermsPrivacyCCPAAI TransparencySchool Data Privacy

© 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.

every AP exam is fiveable

Fiveable

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
RefundsTermsPrivacyCCPAAI TransparencySchool Data Privacy

© 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.