Physics: Principles and Problems
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Chapter 4: Vector Addition
An Internet WebQuest
Integrate the power of the Web with this inquiry-oriented student learning activity
What Is a State Vector?
This NASA site shows how vectors are used to track spacecraft. Link back to "J-Track," a Java-based spacecraft and weather tracker and explain how NASA uses state vectors in this technology.

Pizza from Space

This site details a lab that incorporates vectors, history, and the Lewis & Clark exploration. Use vectors to see how Lewis & Clark got to Omaha.

Volcano Monitoring - GPS
This site is maintained by the U.S. Geological Survey and explains how Global Positioning Systems are used to monitor active volcanoes. Why is the accuracy greater in geodetic applications than in civilian single-point positioning?

Visit this interactive demonstration of the graphical addition of vectors. Confirm that the blue vector is the resultant of the addition of the green and red vectors. Vary the lengths and angle between the red and green vectors and see what happens to the blue vector.

Information on Air Bags & Restraint Systems
These sites contain links to films of airbag tests, Q&As, and a section on how to keep kids safe. Visit these sites and learn what can be done to minimize the risk associated with airbags. Who should consider installing an airbag on/off switch?


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Physics: Principles and Problems