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PHYSICS & THE MOTION OF SPORT

PHYSICS & THE MOTION OF SPORT. Sports are jam packed with physics and motion!. Physics concepts such as: Motion, velocity, speed, acceleration, force, inertia, mass, friction, gravity, power are present in many sports!. PHYSICS AND SPORTS EQUIPMENT :.

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PHYSICS & THE MOTION OF SPORT

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  1. PHYSICS & THE MOTION OF SPORT Sports are jam packed with physics and motion! Physics concepts such as: Motion, velocity, speed, acceleration, force, inertia, mass, friction, gravity, power are present in many sports!

  2. PHYSICS AND SPORTS EQUIPMENT: BOUNCES -bounce pass,dribbling, shooting off backboard BASKETBALL SHAPE OF FOOTBALL - enables the spiral pass - by reducing air resistance, therefore you can throw it farther FOOTBALL SEAMS on the baseball allow pitcher to throw difficult pitches BASEBALL Has DIMPLES- helps air flow around the ball (therefore reduces air resistance, keeps path flight straight) GOLFBALL AERODYNAMIC CYCLING/SPEED SKATING SUITS Reduces air resistance to motion, also known as drag

  3. THE PHYSICS OF A SOCCER BALL • TRADITIONAL BALL • Round shape, smooth surface • Result - Air would stick to front of ball and slow it down • NEW BALL • Has dimples on surface - this redirects the air to flow around the ball, increasing speed by 20% • Less drag - Straighter/smoother flights NEW SOCCER BALL INCREASED DYNAMICS

  4. QUESTION How does the amount of air in a soccer ball affect how far it travels when struck by the same force? HIGHER AIR PRESSURE = improves the ball's rebound off the foot of a player. The ball deforms less during impact, so less energy is lost to deformation, therefore the ball will travel a greater distance.

  5. PHYSICS OF HOCKEY • THE ICE • FAST ICE = (HARDER/COLDER/SMOOTH SURFACE) LESS FRICTION • SLOW ICE = (SOFTER/WARMER) MORE FRICTION INTERACTION OF BLADE AND ICE SURFACE More FORCE/leg power provided by the skater = Less FORCE/leg power provided by the skater = FASTER SLOWER THE EQUIPMENT SKATES = Blades = made of steel. Surface of the blade is not flat, it is concave, this produces two sharp edges Edges = increase players ability to dig into the ice - to stop, start or change direction

  6. THE SLAP SHOT WEIGHT TRANSFER Weight of player transfers from his/her back legs right through to the stick in his/her hands The overall motion is combined with the stick snapping back, releasing ENERGYinto the puck CHECKING - Using physical FORCE to gain possession of the puck

  7. LUGE FORCE is used to get sled moving GRAVITY causes ACCELERATION FRICTION between the ice and the sled The WEIGHT of the luger places PRESSURE on the ice, melting it and creating a slippery layer of water that helps REDUCE FRICTION • EQUIPMENT - REDUCE FRICTIONAL FORCES: • Tight rubberized suits • Special helmets with rounded face shields • Aerodynamic sled design http://www.youtube.com/watch?v=atwcIduYnfU

  8. PHYSICS & MOTION OF SPORT - ACTIVITY In groups of two - research the physics/science of a particular sport: Choose ONE sport from this list: Football Soccer Basketball Cycling Snowboarding Curling Figure Skating Surfing Weightlifting Golf Kayaking Gymnastics Baseball Tennis Skiing Bowling Swimming Bobsledding Volleyball Skateboarding

  9. Motion Related Technology

  10. MOTION RELATED TECHNOLOGIES Bicycle, snowmobile, skateboard, skates, wheelchairs, Planes, vehicles, kayaks, canoes etc. TECHNOLOGICAL TOOLS USED TO MEASURE MOTION STOP WATCH - Used to measure time and distance

  11. Metronome - A mechanical or digital device used for marking time for musicians Motion Sensor - A device that uses sound waves to detect motion Ticker timer - A timing device which makes a series of dots on a paper tape as it is pulled through a timer

  12. TICKER TAPE Used to analyze the MOTION of objects in physics labs A long tape is attached to a moving object and threaded through a device that places a tick upon the tape at regular intervals of time As the object moves, it drags the tape through the "ticker," thus leaving a trail of dots

  13. Ticker tape can also reveal if an object is moving at a CONSTANT VELOCITY or ACCELERATING

  14. MOTION RELATED TECHNOLOGY

  15. THE KAYAK A blend of ART and SCIENCE • SEA KAYAK • Long, narrow and built for speed • Less maneuverable, but fast in a straight line • Glide further per stroke • WHITE WATER KAYAK Short, wide, can turn on a dime • Less stable, but far more maneuverable Common Materials - Plastic, wood or fiberglass

  16. ROLLERCOASTER PHYSICS ROLLER COASTERS DO NOT HAVE ENGINES! The car is pulled to the top of the first hill, but after this the coaster must complete the ride itself The conversion of potential energy to kinetic energy is what drives the roller coaster POTENTIAL ENERGY- Stored energy KINETIC ENERGY - Energy of motion- Ability to move. HEIGHT OF FIRST HILL There is a relationship between the height of the first hill and the speed of the roller coaster

  17. FREE FALL RIDES THE RIDE TO THE TOP - FORCEis applied to the car to lift it to the top of the free-fall tower. MOMENTARY SUSPENSION - The riders are suspended in the air for a brief moment in time DOWNWARD PLUNGE - The car suddenly drops and begins to ACCELERATE toward the ground

  18. ROBOTS Devices that can respond to sensory input ROBOTICS = A branch of Artificial Intelligence

  19. AIBO Made by: Sony (Japan) AIBO stands for:Artificial Intelligent Bot AIBO features a variety of senses: Touch -Sensors on head, back, chin & paws. Hearing -Pair of stereo microphones, voice recognition. Sight -Color camera, distance sensors and facial recognition. Balance -Keeps balance through acceleration sensors

  20. SO WHAT CAN AIBO DO? Each AIBO begins life as a newborn puppy, over time it will develop its own unique personality based upon how it is raised.AIBO can take photos on command, these can be sent via email or stored on his memory card.AIBO can detect movement and sound http://www.youtube.com/watch?v=NKAeihiy5Ck&feature=related http://www.youtube.com/watch?v=pqtsR-2Ph94&feature=related

  21. TRANSPORTATION Automobiles, planes, boats, subways, trains, helicopters etc. MASS TRANSPORTATION - Any kind of transportation system in which large numbers of people are carried within a single vehicle ADVANTAGES OF MASS TRANSPORTATION? http://www.youtube.com/watch?v=0-Me5FD_D0M&feature=PlayList&p=DDE86B2FEF7AD3F3&playnext=1&playnext_from=PL&index=15 http://www.youtube.com/watch?v=9nPt-s2bg3c&feature=PlayList&p=DDE86B2FEF7AD3F3&index=17

  22. TELESCOPE - Hubble Satellite • Hubble has left a stunning legacy of information to astronomy researchers over the years and continues to produce more to this very day. Takes high resolution images of planets, stars, galaxies and more http://www.sciencekids.co.nz/videos/space/hubble.html

  23. SPIRAL GALAXY

  24. SPACE

  25. NEBULA

  26. MARS

  27. DYING STAR

  28. http://www.youtube.com/watch?v=Mmz5qYbKsvM

  29. SO WHAT DOES IT ALL MEAN? Answer each of these questions in a couple of sentences: 1. How does technology impact your daily life? 2. How will technology have an impact on your future? 3. What are some disadvantages and advantages associated with technology? (List 2 to 3 advantages AND disadvantages) 4. Do you think that technology is a good or bad thing? Explain why. How do you think technology has an Impact on the environment?

  30. -Creation of new jobs - Cost effectiveness - Communication - Increased Productivity - Advances in Health Care & Medicine - Advances in Transportation - Shorter traveling distances • Unemployment • Loss of privacy • Lack of job security • Kids are becoming increasingly inactive • Can be unreliable - prone to malfunctions CAN YOU THINK OF ANY OTHERS?

  31. MOTION http://www.youtube.com/watch?v=odGx5JajnHU&feature=related

  32. The MOTION of objects can be described in everyday words ACTIVITY Choose five different everyday objects that are in MOTION (ex. Skateboards, vehicles, birds, dogs, wheelchairs, skis, roller blades, bicycles etc.) Write down a description of the motion of each object in your own words. For example: BIRD MOTION: Can fly fast, can fly slow, uses power produced by flapping wings to fly, flight can be smooth or sporadic, birds can glide etc.

  33. Motion is one of the key topics in physics EVERYTHING IN THE UNIVERSE MOVESEven if you appearto be standing still, the Earth is moving around the Sun, and the Sun is moving around our galaxy Motion is one part of what physicists call MECHANICS Scientists have discovered several laws that explain motion and the causes of changes in motion

  34. The physics of motion is all about FORCES FORCES need to act upon an object to get it moving, or to change its motion CHANGES IN MOTION WON’T HAPPEN ON THEIR OWN

  35. How fast an object moves, its SPEED or VELOCITY can be influenced by forces ACCELERATION is a measure of how much the velocity of an object changes in a certain time MASS is a measure of the amount of matter contained in a physical body http://www.youtube.com/watch?v=HN7bRkHWMeY&feature=related

  36. ACTIVITY Crumple one of piece of paper into a small tight ball. Also obtain a flat sheet of paper. 2. Drop the crumpled paper and the flat sheet of paper at the same time from the same height. 3. Use careful observation to see if both pages land at the same time. 4. Repeat the procedure at least three times to ensure that your methods and observations are consistent and accurate.

  37. ACTIVITY QUESTIONS Observation Results: The flat sheet of paper falls slowly in a side to side motion. The paper ball drops straight to the floor quickly. 2. Does the crumpled paper, or the flat sheet of paper fall to the ground faster? Crumpled paper falls faster. 3. Explain why the crumpled paper and flat paper dropped at a different rate. The paper falls slowly as it descends and moves from side to side because of the friction caused by the air resistance. The crumpled paper ball has less air resistance so falls quicker.

  38. ACTIVITY 2 1. Drop a flat sheet of paper onto the floor from shoulder height 2. Drop a book onto the floor from the same height Drop the book and the sheet of paper at the same time from the same height and observe the difference 4. Now place the paper on top of the book. With the same gravity working on the paper and the book, will the paper fall at the same rate as the book? 5. Drop the book with the paper on top of it(make sure the paper is smaller or equal in size to the book)

  39. ACTIVITY 2 QUESTIONS Write down your observations. The sheet of paper fell slowly moving from side to side. The book dropped like a rock. 2. Describe how the paper fell The sheet of paper will move from side to side when it falls and the air resistance will cause it to descend slowly. 3.Describe how the book fell The book is heavier which allows it to overcome the air resistance so it fell more quickly. 4.When together why did the paper fall as fast as the book There is no air under the paper and therefore no resistance, so it fell at the same time as the book.

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