cover of publication "Physics and Auto Collisions"

 

Code Number: 1I10.20

Demo Title: Physics of Automobiles

Condition: Good

Principle: The Physics of Automobiles

Area of Study: Mechanics

Equipment: 

Accelerometers, Videodisk of Automobile Crashes, Stop Watches.

Procedure:

Timing of automobiles to arrive at velocities and accelerations.

References:

  • Gregory A. DiLisi, Richard A. Rarick, "Jack Reacher and the Deployment of an Airbag", TPT, Vol. 63, #2, Feb. 2025, p. 95.
  • Armand Buzzelli, Gavin Buxton, Marina Fontolan, Alexander Gagnon, "Get Behind the Wheel: Esports and Physics Misconceptions", TPT, Vol. 61, #9, Dec. 2023, p. 770.
  • William J. Layton, "Electric Vehicle Efficiency and Regenerative Braking", TPT, Vol. 61, #3, March 2023, p. 164.
  • Eugene Edward Nalence, "The Physics of Electric Cars", TPT, Vol. 60, #6, Sept. 2022, p. 487.
  • Rod Cross, "Systematic Errors and the Chappaquiddick Accident", TPT, Vol. 59, #6, Sept. 2021, p. 484.
  • Paul Hewitt, "Figuring Physics", TPT, Vol. 58, #6, Sept. 2020, p. 437.
  • Rod Cross, "Basic Physics of Vehicle Acceleration", TPT, Vol. 56, #6, Sept. 2018, p. 358.
  • Christoph Fahsl and Patrik Vogt, "Determination of the Drag Resistance Coefficients of Different Vehicles", TPT, Vol. 56, #5, May 2018, p. 324.
  • Rod Cross, "The Chappaquiddick Incident", TPT, Vol. 54, #9, Dec. 2016, p. 520.
  • Yasua Ogawara, "How to Drive a Car on a Snowy Slope", TPT, Vol. 54, #8, Nov. 2016, p. 498.
  • Bernard J. Feldman, "American Automobile and Light Truck Statistics Update", TPT, Vol. 52, #3, Mar. 2014, p. 174.
  • Ole Anton Haugland, "Car Stopping Distance on a Tabletop", TPT, Vol. 51, #5, May 2013, p. 268.
  • Alan D. Gleue, Chris Depcik, and Ted Peltier, "Dashboard Videos", TPT, Vol. 50, #8, Nov. 2012, p. 477.
  • Raghuveer Parthasarathy, "Cars and Kinetic Energy - Some Simple Physics with Real - World Relevance", TPT, Vol. 50, #7, Oct. 2012, p. 395.
  • Rod Cross, "Launch of a Vehicle From a Ramp", TPT, Vol. 49, #7, Oct. 2011, p. 410.
  • Clifton Murray, "Wheel Diameter and Speedometer Reading", TPT, Vol. 48, #6, Sept. 2010, p. 416.
  • Frank Lee and Herman Batelaan, "Author's Response", TPT, Vol. 48, #6, Sept. 2010, p. 359.
  • Lester Evans, "More on Nitrogen in Tires", TPT, Vol. 48, #6, Sept. 2010, p. 359.
  • Peter D. Noerdlinger, "Not Worth the Cost", TPT, Vol. 48, #6, Sept. 2010, p. 359.
  • Bryan Leonard, "Nitrogen in Racing Tires", TPT, Vol. 48, #6, Sept. 2010, p. 359.
  • Michele D'Anna and Paolo Lubini, "Chemical Potential", TPT, Vol. 48, #6, Sept. 2010, p. 358.
  • Frank Lee and Herman Batelaan, "The Answer to Rising Gas Prices... Nitrogen?", TPT, Vol. 48, #3, Mar. 2010, p. 160.
  • Solomon Fischer and Paul Gluck, "An Exercise in Vehicle Kinematics and Energetics", TPT, Vol. 47, #3, Mar. 2009, p. 137.
  • Mark A. Ilyes and Whitney Ortman-Link, "A Physics Road Rally", TPT, Vol. 47, #2, Feb. 2009, p. 98.
  • Bernard J. Feldman, "The Hybrid Automobile and the Atkinson Cycle", TPT, Vol. 46, #7, Oct. 2008, p. 420.
  • Paul Hewitt, "Figuring Physics", TPT, Vol. 46, #1, Jan. 2008, p. 50.
  • Klaus Fritsch, "Fun with Automobile Springs", TPT, Vol. 44, #7, Oct. 2006, p. 451.
  • Arthur Eisenkraft, "Raccoons and Bowling Balls", TPT, Vol. 44, #5, May 2006, p. 262.
  • Susan Ramlo, "Jeff and the Raccoon", TPT. Vol. 44, #3, Mar. 2006, p. 160.
  • Carl E. Mungan, "Accelerating Around an Unbanked Curve", TPT, Vol. 44, #2, Feb. 2006, p. 99.
  • Christopher M. Graney, "A Treasure Trove of Physics from a Common Source - Automobile Acceleration Data", TPT, Vol. 43, #8, Nov. 2005, p. 506.
  • Bernard J. Feldman, "Hydrogen Fuel Cell Automobiles", TPT, Vol. 43, #8, Nov. 2005, p. 492.
  • Jonathan Hall and Jerry Magraw, "Modeling Vehicle Rollover", TPT, Vol. 43, #7, Oct. 2005, p. 445.
  • Mark A. Ilyes and James M. Filizzi, "Pizza Boy vs. the Highway Department", TPT, Vol. 43, #7, Oct. 2005, p. 434.
  • Robert Ehrlich, "When Is Momentum Conserved, and What About Car Crashes in Virginia?", TPT, Vol. 43, #7, Oct. 2005, p. 422.
  • Chris M. Graney, "An Alternative Approach to 'Measuring Horsepower and Torque Curves of a Car'", TPT, Vol. 43, #6, Sept. 2005, p. 363.
  • Bernard J. Feldman, "A Physicist's View of the Automobile Engine", TPT, Vol. 42, #9, Dec. 2004, p. 543.
  • Desmond N. Penny, "Rollover of Sport Utility Vehicles", TPT, Vol. 42, #2, Feb. 2004, p. 86.
  • Albert A. Bartlett, "Statistics of Measurements of Automobile Fuel Efficiency", TPT, Vol. 41, #8, Nov. 2003, p. 472.
  • John Ross Buschert, "Measuring Horsepower and Torque Curves of a Car", TPT, Vol. 41, #6, Sept. 2003, p. 355.
  • James H. Andrews, "More Mirror Calculations", TPT, Vol. 41, #4, Apr. 2003, p. 196.
  • Sam Lightner, "Which Mirror?", TPT, Vol. 41, #4, Apr. 2003, p. 196.
  • "Editor's Note:", TPT, Vol. 41, #4, Apr. 2003, p. 196.
  • Richard Summers, "How Is Your Gas Mileage?", TPT, Vol. 41, #3, Mar. 2003, p. 138.
  • Ariel R. Libertun, "Warning! Objects in Mirror Are Closer Than They Appear", TPT, Vol. 41, #1, Jan. 2003, p. 20.
  • "Work, Energy, and Kinematic Car Data", TPT, Vol. 40, #9, Dec. 2002, p. 516.
  • Angel Luis Velazquez-Aviles, "Using the Work-Energy Theorem With Car and Driver Website Data", TPT, Vol. 40, #4, Apr. 2002, p. 235.
  • David Wheller, "Website Data", TPT, Vol. 40, #4, Apr. 2002, p. 324.
  • David Larabee, "Car Collisions, Physics, and the State Highway", TPT, Vol. 38, #6, Sept. 2000, p. 334.
  • Ronald Newburg and Alexander Newburg, "Finding the Equation for a Vibrating Car Antenna", TPT, Vol. 38, #1, Jan. 2000, p. 31.
  • Richard L. Hall, "Just-in-Time Braking", TPT, Vol. 37, #9, Dec. 1999, p. 518.
  • C. H. Worner, S. Romero, and A. Romero, "Simple Kinematics and Traffic Flow", TPT, Vol. 37, #6, Sept. 1999, p. 324.
  • Paul Hewitt, "Figuring Physics", TPT, Vol. 37, #5, May 1999, p. 319.
  • Jim Schreve, "Safe Following Distances", TPT, Vol. 36, #6, Sept. 1998, p. 325.
  • Mark P. Silverman, "Flying High, Thinking Low? What Every Aeronaut Needs To Know", TPT, Vol. 36, #5, May 1998, p. 288.
  • John G. King and A. P. French, "Truth in Advertising? - A Automobile Kinematics Problem", TPT, Vol. 36, #5, May 1998, p. 266.
  • Robert W. Lawrence, "Braking in Time", TPT, Vol. 36, #5, May 1998, p. 260.
  • Jim Malone and Dave Holzwarth, "A Real Look at Speeds and Stopping Distance", TPT, Vol. 36, #2, Feb. 1998, p. 95.
  • Jim Malone and Dave Holawarth, "Author's Response", TPT, Vol. 36, #1, Jan. 1998, p. 6.
  • Bernard J. Feldman, "Elementary Physics in a Real Automobile Accident", TPT, Vol. 35, #6, Sept. 1997, p. 335.
  • John E. Carlson, "Fermi Problems on Gasoline Consumption", TPT, Vol. 35, #5, May 1997, p. 308.
  • "Erratum", TPT, Vol. 35, #5, May 1997, p. 261.
  • R.C. Nicklin, "Kinematics of Tailgating", TPT, Vol. 35, #1, Feb. 1997, p. 78.
  • John Mottmann, "The Physics of Air-Bag Sensors", TPT, Vol. 34, #8, Nov. 1996, p. 524.
  • R.B. Knollenberg, "Newton's Second on the Highway", TPT, Vol. 34, #3, Mar. 1996, p. 135.
  • Howard C. Hayden, "The Automotive Ignition System", TPT, Vol. 34, #2, Feb. 1996, p. 90.
  • Derek B. Swinson, "Vehicle Rollover", TPT, Vol. 33, #6, Sept. 1995, p. 360.
  • Paul Chagnon, "Optics for People Stuck in Traffic: License Plates", TPT, Vol. 33, #2, Feb. 1995, p. 112.
  • Edwin F. Meyer III, "Multi-Car Pileups and the Two-Second Rule", TPT, Vol. 32, #8, Nov. 1994, p. 496.
  • Albert A. Bartlett, "Physics from the News: Curve Fitting", TPT, Vol. 32, #5, May 1994, p. 278.
  • H. Richard Crane, "How Antilick Brakes May Save You from a Spin", TPT, Vol. 32, #4, April 1994, p. 246.
  • John Sperry and Even Jones, "How Do Tubeless Tires Support an Auto?", TPT, Vol. 32, #3, Mar. 1994, p. 174.
  • Paul Chagnon, "Optics for People Stuck in Traffic: Stress Patterns", TPT, Vol. 32, #3, Mar. 1994, p. 166.
  • William A. Shurcliff, "What Holds Up the Steel Wheels of an Automobile?", TPT, Vol. 32, #5, May 1994, p. 296.
  • Robert Salow, Jim Thornton, Jr., and Peter Siegel, "Is the Yellow Light Long Enough?", TPT, Vol. 31, #2, Feb. 1993, p. 80.
  • John D. McGervey, "Traffic Light Chaos", TPT, Vol. 31, #5, May. 1993, p. 262.
  • John W. Jewett, Jr., "DMU Physics- The Case of the Disappearing Time Intervals", TPT, Vol. 29, #9, Dec. 1991, p. 563.
  • Ronald G. Newburgh, "Jerk and The Rotating Observer", TPT, Vol. 29, #8, Nov. 1991, p. 484.
  • R. H. Garstand, "How Hot Does Your Car Become?", TPT, Vol. 29, #1, Jan. 1991, p. 58.
  • Jack Irwin and Derek Swinson, "A Demonstration of Car Braking Instabilities", TPT, Vol. 28, #8, Nov. 1990, p. 522. 
  • H. T. Hudson, "Style vs. Optics", TPT, Vol. 28, #5, May 1990, p. 320.
  • T. R. Sandin, "The Jerk", TPT, Vol. 28, #1, Jan. 1990, p. 36.
  • Richard E. Berg, "More On The Third Derivative", TPT, Vol. 28, #3, Mar. 1990, p. 199.
  • Ernie McFarland, "Newton's Third Law at a Traffic Intersection", TPT, Vol. 28, #5, May 1990, p. 315.
  • George B. Franklin, "The Late Apex Turn", TPT, Vol. 28, #2, Feb. 1990, p. 68.
  • Albert A. Bartlett, "Thinking in the Rain", TPT, Vol. 27, #5, May 1989, p. 364.
  • Jack M. Wilson, "More Jerks", TPT, Vol. 27, #1, Jan. 1989, p. 7.
  • Dennis P. Zicko, "Spin-Out Velocity of a Slot Car", TPT, Vol. 26, #7, Oct. 1988, p. 452.
  • David L. D. Green and David T. Hartney, "Newton's Truck: Determining Mass and Finding 'G' by Pushing a Truck Across a Parking Lot", TPT, Vol. 26, #7, Oct. 1988, p. 448.
  • Ronald A. Bryan, Robert Beck Clark, and Pat Sadberry, "Illustrating Newton's Second Law with the Automobile Coast-Down Test", TPT, Vol. 26, #7, Oct. 1988, p. 442.
  • Richard A.D. Hewko, "The Racing Car Turn", TPT, Vol. 26, #7, Oct. 1988, p. 436.
  • Albert A. Bartlett, "Physics and the Measurement of Automobile Performance", TPT, Vol. 26, #7, Oct. 1988, p. 433.
  • Leonard Evans, "The Science of Traffic Safety", TPT, Vol. 26, #7, Oct. 1988, p. 426.
  • Thomas D. Rossing, "The Doppler Effect and Racing Cars", TPT, Vol. 26, #7, Oct. 1988, p. 423.
  • "Editor's Note", TPT, Vol. 26, #7, Oct. 1988, p. 423.
  • Stephen Luzader, "What a Jerk!", TPT, Vol. 26, #7, Oct. 1988, p. 423.
  • Eugene E. Nalence, "Using Automobile Road Test Data", TPT, Vol. 26, #5, May 1988, p. 278.
  • Chris Buethe, "Physics at the Indy 500", TPT, Vol. 26, #5, May 1988, p. 274.
  • Robert A. Morse, "Determining the Effect of Tire Pressure on Rolling Resistance", TPT, Vol. 26, #4, Apr. 1988, p. 225.
  • D. Easton, "The Stoplight Dilemma Revisited", TPT, Vol. 25, #1, Jan. 1987, p. 36.
  • Van E. Nele, "Overturning Extended", TPT, Vol. 24, #9, Dec. 1986, p. 527.
  • H. Richard Crane, "Smart Ignition Systems on Modern Cars", TPT, Vol. 24, #7, Oct. 1986, p. 438.
  • Frank Butcher, "A Case Study of Bad Driving and Good Physics", TPT, Vol. 24, #2, Feb. 1986, p. 95.
  • H. Richard Crane, "The Air Bag: An Exercise in Newton's Laws", TPT, Vol. 23, #9, Dec. 1985, p. 576.
  • H. Richard Crane, "From a Reader: A Puzzle About Rear-View Mirrors", TPT, Vol. 23, #4, Apr. 1985, p. 238.
  • Eric T. Lane, "Excess Speed Estimation", TPT, Vol. 22, #8, Nov. 1984, p. 520.
  • H. Richard Crane, "Your (Not Always) Friendly Traffic Signals", TPT, Vol. 22, #6, Sept. 1984, p. 399.
  • Hannele Merivuori and Jeffrey A. Sands, "Standing Wave Pattern On Automobile Radio Antenna", TPT, Vol. 22, #1, Jan. 1984, p. 33.
  • Thomas T. Liao, "Design and Performance of Electric Vehicles", TPT, Vol. 21, #8, Nov. 1983, p. 500.
  • Robert G. Carson, "Everyday Physics: Auto Test Report", TPT, Vol. 21, #6, Sept. 1983, p. 369.
  • John E. Farr, "Determining The Air Drag on a Car", TPT, Vol. 21, #5, May 1983, p. 320.
  • Roger E. Mills, "Miracle Mileage Versus the Conservation of Energy", TPT, Vol. 21, #1, Jan. 1983, p. 45.
  • Gene Waring, "Winter Mileage", TPT, Vol. 20, #8, Nov. 1982, p. 540.
  • John H. Myers, Jr., "Physics and the 55-mph Controversy", TPT, Vol. 20, #1, Jan. 1982, p. 35.
  • Mario Iona, "Is 'Height' Positive or Negative?", TPT, Vol. 19, #9, Dec. 1981, p. 581.
  • Albert A. Bartlett, "How Energy - Costly is Car Air Conditioning?", TPT, Vol. 19, #5, May 1981, p. 353.
  • Gene Waring, "The Author Replies", TPT, Vol. 19, #5, May 1981, p. 353.
  • Robert Lehrman, David Rothenberg, and Everett Hafner, "Why Do You Feel a Corner More In One Car Than Another?", TPT, Vol. 19, #4, Apr. 1981, p. 258.
  • Herbert E. Steingass, "Keep It Simple", TPT, Vol. 19, #3, Mar. 1981, p. 154.
  • Albert A. Bartlett, "An Author Replies", TPT, Vol. 19, #3, Mar. 1981, p. 154.
  • Albert A. Bartlett, "Automobile Springs and Tire Damage", TPT, Vol. 19, # 2, Feb. 1981, p. 118.
  • J. Fred Watts, "To Stop or Not to Stop - Kinematics and the Yellow Light", TPT, Vol. 19, #2, Feb. 1981, p. 114.
  • Mary L. Brake, "Physics in Accident Investigations", TPT, Vol. 19, #1, Jan. 1981, p. 26.
  • Albert A. Bartlett, "External Manifestations of the Variation of the Free-Fall Acceleration Inside Moving Cars", TPT, Vol. 18, #8, Nov. 1980, p. 596.
  • Gene Waring, "Energy and the Automobile",TPT, Vol. 18, #7, Oct. 1980, p. 494.
  • L J. Logue, "Automobile Stopping Distances", TPT, Vol. 17, #5, May 1979, p. 318.
  • Robert D. Grimm, "A Classroom Demonstration of Automobile Stopping Distances", TPT, Vol. 16, #8, Nov. 1978, p. 559.
  • Glenn Zimmerman, Everett Hafner, "Why Does an Accelerating Car Tilt Upward?", TPT, Vol. 16, #2, Feb. 1978, p. 122.
  • Van E. Neie, "Driving Safety and Straight-Line Kinematics", TPT, Vol. 13, #4, Apr. 1975, p. 236.
  • Fred M. Goldberg, "Friction in a Moving Car", TPT, Vol. 13, #4, Apr. 1975, p. 234.
  • Barton Palatnick, "Kinematics and the Driver", TPT, Vol. 12, #4, Apr. 1974, p. 229.
  • Elizabeth A. Wood, "Physics for Automobile Passengers", TPT, Vol. 11, #4, Apr. 1973, p. 239, also A Potpourri of Physics Teaching Ideas - Optics and Waves, p. 214.
  • Tamás Radnai et al., "A Simulation Experiment Using Algodoo: What Force Makes a Car Accelerate, and What Does the Acceleration Depend On?", TPT, Vol. 61, #4, Apr. 2023, p. 271.
  • Francois Schiettekatte, "Energy Conservation Strategies for Electric Vehicles on Hills", AJP, Vol. 89, #11, Nov. 2021, p. 1018.
  • D. P. Wick and M. W. Ramsdell, "Modeling the Motion of a Toy Car Traveling on an Arbitrarily Shaped Track", AJP, Vol. 70, #7, July 2002, p. 670.
  • Antonio Alcaraz and Patricio Ramı́rez, "Comment on “Role of the Centrifugal Force in Vehicle Roll,” by Rod Cross [Am. J. Phys. 67 (5), 447–448 (1998)]", AJP, Vol. 70, #5, May 2002, p. 556.
  • Rod Cross, "Role of the Centrifugal Force in Vehicle Roll", AJP, Vol. 67, #5, May 1999, p. 447.
  • Carsten M. Haaland, "Minimum Engine Size for Optimum Automobile Acceleration", AJP, Vol. 60, #5, May 1992, p. 415.
  • George C. Goldenbaum, "Equilibrium Sailing Velocities",  AJP, Vol. 56, #3, Mar. 1988, p. 209.
  • W. D. King, "Fluid Flow and Particle Trajectories Around Simple Bodies: Impaction of Snowflakes on Car Windshields", AJP, Vol. 55, #2, Feb. 1987, p. 149.
  • William S. Wagner, "Automobile Deceleration Force by the Coast-Down Method", AJP, Vol. 54, #11, Nov. 1986, p. 1049.
  • W. G. Unruh, "Erratum: 'Instability in Automobile Breaking' [Am. J. Phys. 52, 903 (1984)]", AJP, Vol. 54, #6, June 1986, p. 571.
  • John Kwasnoski and Richard Murphy, "Determining the Aerodynamic Drag Coefficient of an Automobile", AJP, Vol. 53, #8, Aug. 1985, p. 776.
  • W. G. Unruh, "Instability in Automobile Braking", AJP, Vol. 52, #10, Oct. 1984, p. 903. 
  • James D. Edmonds Jr., "Speed and Displacement Relations for Tire Skids", AJP, Vol. 48, #3, March 1980, p. 253.
  • Daniel P. Whitmire and Timothy J. Alleman, "Effect of Weight Transfer on a Vehicle's Stopping Distance", AJP, Vol. 47, #1, Jan. 1979, p. 89.
  • Richard C. Smith, "General Physics and the Automobile Tire", AJP, Vol. 46, #8, Aug. 1978, p. 858.
  • Herman Erlichon, "Work and Kinetic Energy for an Automobile Coming to a Stop", AJP, Vol. 45, #8, Aug. 1977, p. 769.
  • Richard A. Bartels, "Braking Distance versus Mass for Automobiles", AJP, Vol. 45, #4, Apr. 1977, p. 398. 
  • Gene I. Rochlin, "Drag Force on Highway Vehicles", AJP. Vol. 44, #10, Oct. 1976, p. 1010.
  • R. E. Barker, Jr., "Fuel Consumption Due to Air Resistance at Highway Speeds", AJP, Vol. 44, #1, Jan. 1976, p. 108.
  • Penny L. Ball, Gary D. Doolen, Edward S. Fry, and Marion D. Wedin, "Car-Crash Experiment for the Undergraduate Laboratory", AJP, Vol. 42, #8, Aug. 1974, p. 645.
  • J. Richard Shanebrook, "Power to Overcome Air Resistance at Highway Speed", AJP, Vol. 42, #11, Nov. 1974, p. 1028.
  • Geoffrey T. Fox, "On the Physics of Drag Racing", AJP, Vol. 41, #4, April 1973, p. 311.
  • Richard C. Smith, "Static vs. Spin Balancing of Automobile Wheels", AJP, Vol. 40, #1, Jan. 1972, p. 199.
  • R. Mark Wilson, "Most Automobile Brakes Emit Charged Aerosols Into the Atmosphere", Physics Today, Vol. 77, #5, May 2024, p. 20.
  • Robert Otto Rasmussen, Paul R. Donavan, "What Causes Road Noise?", Physics Today, Vol. 62, #12, Dec. 2009, p. 66.
  • Marc Ross, Deena Patel, Tom Wenzel, "Vehicle Design and the Physics of Traffic Safety", Physics Today, Vol. 59, #1, Jan. 2006, p. 49.
  • John R. Pierce, "The Fuel Consumption of Automobiles", Scientific American, Jan. 1975, p. 34.
  • Matthew Jancer, "The Car That Runs on Air", Popular Science, March 2014, p. 68.
  • Pat Murphy, Ellen Macaulay, and the staff of the Exploratorium, "The Car Ride", Exploratopia, p. 160.
  • H. Richard Crane, "How Antilock Brakes May Save You From a Spin", How Things Work (1983 - 1995), p. 133.
  • H. Richard Crane, "Help For Forgetful Car Owners and Lazy Yo-Yo Throwers", How Things Work (1983 - 1995), p. 75.
  • H. Richard Crane, "Halogen Lamps", How Things Work (1983 - 1995), p. 23.
Hyperphysics in Car Crashes.
 
University of Maryland Physics Department QOTW Question #73
University of Maryland Physics Department QOTW Answer #73
University of Maryland Physics Department QOTW Question #81
University of Maryland Physics Department QOTW Answer #81
1I10.20 - University of Maryland QOTW Question #73
1I10.20 - University of Maryland QOTW Answer #73
1I10.20 - University of Maryland QOTW #81