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Nelson Education > School > Secondary Science > Science 10 > Teacher Centre > Work The Web > Chapter 12
 

Work The Web

UNIT 3: MOTION

Chapter 12: Displacement, Velocity and Acceleration

12.3  Technology and Skiing
12.6  Displacement from Velocity-Time Graphs
12.7  Acceleration Due to Gravity
12.8  Gravitational Acceleration Near Earth
12.10  "Nothing by Authority"
12.11  Career Profile: Air Traffic Controller

Section Work the Web
12.3
Technology and Skiing
  1. Find times for a Canadian skier at the Lauberhorn race. Calculate his average speed. Express this speed as a percentage of the terminal speed for a human falling through air: about 55 m/s for a spread-eagle position.
  2. Research a new development in ski boots, bindings, clothing, or helmets, and report on the development to your class in an oral presentation.

The Federation Internationale de Ski runs World Cup alpine races such as the Lauberhorn downhill in Wengen, Switzerland. To find results, use the search engine in its calendar.
For the teacher: This site gives results for all World Cup races, including current events.

Ski Canada Magazine
For the teacher: This is a good overall source for Canadian skiing news and issues.

Equipment, Alpine Canada Alpin
For the teacher: Students can research these pages to see what the major Canadian ski equipment makers are producing.

New England Ski Museum
For the teacher: This is a short page on the innovations in ski equipment.

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Leedom helmets
For the teacher: This company sells innovative helmet designs including one with a patented airflow system.

'The New Shape of Skiing, Dynastar [equipment]
For the teacher: This manufacturer makes boots, bindings and skis.

Airtime Custom Clothing
For the teacher: This company produces custom-made. high-quality clothing for professional skiers.

Comfilon — legwear
For the teacher: This company manufacturers "legwear" (long underwear) of the latest designs designed to prevent muscle fatigue and well as keep the skier warm.

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12.6
Displacement from Velocity-Time Graphs

If you are having difficulties solving motion problems in one dimension, you are not alone. Even physicists find it challenging. There are still some unsolved problems for one-dimensional acceleration. Find out, in general, what types of problems remain unsolved. Try to offer some solutions!

The Physics Classroom: One Dimensional Kinematics, Tom Henderson, Glenbrook South High School.Illinois, USA, gives a wide range of information on this science.
For the teacher: This site contains everything you ever wanted to know about kinematics — such as describing motion with one-dimensional equations.

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12.7
Acceleration Due to Gravity

NASA has conducted and continues to conduct many experiments in "free fall". What are some of the purposes of these experiments? How are they done? What information has been obtained? What are some other questions left to be answered?

NASA Microgravity Science Laboratory has very good links to a number of microgravity experiments.
For the teacher: This page contains links to various microgravity experiments NASA has devised for teachers to use as well as descriptions of various experiments NASA has tested in free-fall.

Free-Fall and Microgravity, NASA, contains more information on microgravity and experiments.
For the teacher: This site describes the concept and describes experiments NASA has held to study the effects of free-fall and microgravity.

Life and Microgravity, NASA, gives a good overview on what NASA is doing in this area.
For the teacher: This site allows students to fully explore what NASA is studying.

Microgravity Science, NASA Space Station, contains information on experiments performed here.
For the teacher: This site describes what experiments and research into microgravity have been done at the space station.

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12.8
Gravitational Acceleration Near Earth

The Geodetic Survey Division of the Department of Natural Resources Canada has measured the acceleration due to gravity at thousands of locations across the country. Why have they done this? Who uses this information? How precise are their measurements?

The National Gravity Program, Geodetic Survey of Canada is a very comprehensive site.
For the teacher: This site is devoted to collecting data on the Earth's gravity field. It describes the national Gravity Program and why it is important. There is abundant data for students to study.

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12.10
"Nothing by Authority"

Explore the Web to find pictures and stories related to Galileo: his appearance; his clocks and inclined planes; and his experiments. Report on one of your findings in an illustrated poster.

Galileo Galilei, Jet Propulsion Laboratory, NASA
For the teacher: This site has good overall Galileo information.

The Galileo Project, Rice University, USA
For the teacher: This site contains photos, experiments and an in-depth history relating to Galileo.

The Physics of Aristotle versus The Physics of Galileo, Department of Physics & Astronomy, University of Tennessee, USA
For the teacher: This site balances the physics of Aristotle against the physics of Galileo. [Not on Student site]

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12.11
Career Profile: Air Traffic Controller

Check out NAV Canada's Web site — which positions is NAV CANADA currently trying to fill?

NAV CANADA
For the teacher: NAV CANADA careers page.

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