Tutorial Summary

Click "Move". Note that a parallelogram is formed.

Show the sum. Note that if you start at the tail of vector A + B, you can get indirectly to its tip:

First moving "with" arrow A and then "with" arrow B, or

First moving "with" arrow B and then "with" arrow A.

Show the difference. Note that if you start at the tail of vector A - B, you can get indirectly to its tip:

First moving "with" arrow A and then "against" arrow B, or

First moving "against" arrow B and then "with" arrow A.

Credits
Authored by Kevork Spartalian, University of Vermont, based on Davidson College physlets.