Drag C.

The velocity of D is the same as the velocity of C rotated 90o. The velocity of G is the same as the velocity of C rotated 90o the other way. Therefore the velocities of D and G are the same magnitude but in opposite directions. Therefore the midpoint of DG remains constant.

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Position of the treasure
Figure 8

Alfinio Flores
ASU

This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1997 by Key Curriculum Press, Inc. All rights reserved. Portions of this work are being funded by the National Science Foundation (awards DMI 9561674 & 9623018).