Ask Dr. Jay

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# Links for the Fourth Chapter

This video gives you a quick visual for using magnitude and direction to represent a vector.

This video shows you how vectors add using a ball and two different pushes.

This video shows you how to add vectors graphically. You only need to know how to add two vectors (covered in the first part of the video), but he goes on to show how you can add three vectors.

This video shows you how to subtract vectors graphically.

This video gives a nice visual for breaking a 2-dimensional vector into its components.

This video shows you how to break a 2-dimensional vector into its components. He doesn’t do the significant figures properly, however. Both of his components should have only two significant figures.

This video shows you how add 2-domensional vectors analytically. He also doesn’t do the significant figures properly, since 10 km has only one significant figure.

This video shows an airplane landing much like what is pictured on page 105 in the book.

Map For Experiment 4.2

You can download this PDF and print it out for Experiment 4.2

This video uses a globe map and a flat map to show why airplane routes look curved on a flat map.

This video goes through a problem where you add an airplane’s velocity to the wind velocity to get the actual velocity.

Extra Practice Problems

Here are the extra practice problems for Chapter 4. The solutions are here.