Watching a Football game: When you understand the science you

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Watching a Football game: When you understand the science you Powered By Docstoc
					Fun things to watch for
during a Football game…
   Physics in Motion
            Prof. David Toback
             Department of Physics
                and Astronomy

                              David Toback
 October 8, 2009   Professor of Physics and Astronomy
  Watching a Football Game
  When you understand the
 science you can understand
what makes a team successful


  I’ll show a couple of slides and video
  with some fun things to look for when
     you are watching your next game

                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                     Overview

• Offense: Trying to score a touchdown
• Defense: Trying to prevent a
  touchdown
• Punting: Kicking the ball to the other
  team because it’s their turn
Start with some of the principles, say a
  few words and then watch some
  examples

                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                  The Physics
• Football, like most sports, is a game
  of speed and power, only more
  extreme
• The quarterback can throw a ball over
  70 yards (~70 meters)
• The people protecting the quarterback
  are enormous, ~300 lbs (~150 kg)
• The people trying to catch the ball
  are incredibly fast, some have run
  track in the Olympics!
• Punters can kick a ball high in the air
  over 50 yards (~50 meters)
                  David Toback
October 8, 2009   Professor of Physics and Astronomy
        Why is this important?
• One of the things that makes football
  players special is the balance between
  their speed and their size
• This is especially important on offence
  and defense
• Physics Equation:
    – Energy = ½ MV2 where M is the Mass of
      the player (how much he weighs, how big
      he is) and V is his speed (how fast or
      how quick he is)
                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                       So what?
• If you are trying to run with the ball,
  then the bigger you are the more
  energy you have to not get tackled
  (you can break out of their arms!)
• However:
   – Most really heavy people can’t run very
     fast
   – Most people who can run really fast
     aren’t very heavy
• What makes these men special is that they
  are they are big AND fast
                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                      Offense
• Offense: A running back’s effectiveness is
  dependent on his energy, which is a
  combination of both his mass and his speed
  (mostly his speed). For this reason he
  sometimes will start far back behind the
  line of scrimmage so he can get some real
  speed (some real energy). This allows him
  to bounce off tackles and make big gains.
• Video clip 1: Running back in the backfield,
  gets lots of speed, breaks a few tackles,
  and runs for a big gain

                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                      Defense
• Defense: A defense's effectiveness is
  dependent on the same thing. Again, a
  combination of mass and speed. Having big
  guys who can run fast is the ultimate
  advantage

• Video clip 2: The defense is trying to get
  to the quarterback. By mistake one of
  them is allowed to run really fast so he can
  get to the quarterback
• Video clip 3 Video clip 4: "The Hit" which is
  the ultimate combination of size and speed
                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                        Punting
A punter kicks the football to a person
 downfield. While the ball is in the
 area his team runs down the field to
 try and tackle the guy who just
 caught the ball




                             David Toback
October 8, 2009   Professor of Physics and Astronomy
                  Perfect Balance!
                        #2:
                        #1:
                  Kick #3:
                    Good: Spends a long time in
                           Goes really pretty far!
                  • Good enough: Goesfar!
                    the air so theSpends long time
                    Bad: enough: person trying
                  • Good Doesn’t spend a a good to
                    catch itof Person catching gives
                    in the has to in the air it
                    amountair! time wait. This so
                    will people tryingtimeto tackle
                                who to to start
                    the have lots ofwant tackle
                    him enough time to get there!
                    running before the people
                    haveLOTS oftime to get there!
                    trying to tackle him far!
                  • Bad: Doesn’t go veryget there.
                    He can build up speed! Makes
                    him harder to catch and tackle




                                  David Toback
October 8, 2009        Professor of Physics and Astronomy
• Next time you’re at a Football
  game, watch the power and
  speed
• Enjoy your Aggies!




                             David Toback
October 8, 2009   Professor of Physics and Astronomy

				
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posted:11/25/2011
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