home
- Mechanics
  - Kinematics
  - Dynamics I: Force
  - Energy
  - Dynamics II: Momentum
  - Rotational Motion
  - Planetary Motion
  - Periodic Motion
  - Fluids
- Thermal Physics
  - Heat & Temperature
  - Calorimetry
  - Heat Transfer
  - Thermodynamics
- Waves & Optics
  - Wave Phenomena
  - Sound
  - Physical Optics
  - Geometric Optics
- Electricity & Magnetism
  - Electrostatics
  - Electrostatic Applications
  - Electric Current
  - DC Circuits
  - Magnetostatics
  - Magnetodynamics
  - AC Circuits
  - Electromagnetic Waves
- Modern Physics
  - Relativity
  - Quanta
  - Wave Mechanics
  - Nuclear Physics
  - Particle Physics
- Appendices
  - Units
  - Measurement
    - Significant Digits
    - Orders of Magnitude
  - Graphs
  - Vectors
  - Reference
about
news
- Categories
  - all
  - astronomy
  - education
  - electricity
  - engineering
  - events
  - general
  - history
  - mathematics
  - mechanics
  - modern
  - sci-fi
  - shop
  - thermal
  - waves
- Feeds
  - rss
  - atom
  - tee shirts
shop
- Categories
  - all
  - astronomy
  - history
  - telephone
  - dumb
- Products
  - all
  - men
  - women
  - kids & babies
contact
more
- The Chaos Hypertextbook
- E-World
- The Physics Factbook
- Get Bent
- Even More
✚ share

Action-Reaction

Resources

free body diagrams
- Free-body diagrams revisited — I. James E. Court. The Physics Teacher. Vol. 37, No. 7 (October 1999): 427-433.
- Exercises in drawing and utilizing free-body diagrams. Kurt Fisher. The Physics Teacher. Vol. 37, No. 7 (October 1999): 434-435.
- Free-body diagrams. James E. Court. The Physics Teacher. Vol. 31, No. 2 (February 1993): 104-108.
humor
- Physics Teacher's Car Accident Would've Made Perfect Example for Class, The Onion, 1 December 2009, Issue 45·49
Philosophiæ Naturalis Principia Mathematica (Mathematical Principals of Natural Phiolosopy), Isaac Newton, 5 July 1687
- Google Books, Latin First Edition, 1687
- Google Books, Latin Third Edition, 1833
- Carnegie Mellon University, First American Edition, Translated by Andrew Motte, 1729
- The Internet Archive, First American Edition, Translated by Andrew Motte, 1729
- Московский Центр Непрерывного Математического Образования, Перевод Алексея Николаевича Крылова, 1936
simulations
- Vector Jockey, A very simple Windows application that illustrates Newton's laws in two dimensions quite well.
miscellaneous
- If action = reaction, how does anything move? A Staff Report by the Straight Dope Science Advisory Board, 20 April 2004
video on demand
- The Mechanical Universe and Beyond
  - Newton's Laws, Newton lays down the laws of force, mass, and acceleration.
- YouTube
  - How astronauts do it: Taking a dump in space, Phil West and Charlie Spencer explain how IT is done in space in this NASA educational video
  - Space Toilet, Chris Hadfield of the Canadian Space Agency at the Ontario Science Centre explaining one origin of shooting stars,

Amazon.com Widgets

The Physics Hypertextbook

No condition is permanent.