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Resource Description:

Relative Motion (Frame of Reference)

This site features dozens of physics-related java simulations. You may use them without registering, or you may register to be able to download them to your computer. These include two types of simulations. The first are written by Asso. Prof. Fu-Kwun Hwang
Dept. of physics, National Taiwan Normal University, and deal with kinematics, Dynamics, Wave, Thermodynamics, Electromagneticsand Optics. The others are Easy Java Siimulations which allows you to easily make simulations.
NTNUJAVA simulations -> kinematics -> Relative Motion (frame of reference)

This simulation, allows you to look at the relative motion of a variety of objects on a river. Go to NTNUJAVA simulations -> kinematics -> Relative Motion (frame of reference. Once the Java loads, you can see the realtive motion of a river in the center of the screen (yellow dots are moving with water), a red boat is also moving with respect to the river (but faster, a person (blue)who walks close to one side of the river (who canswim across the river), a log flowing with the river, and a bug (or something) that moves along the log back and forth.

You change you frame of reference by moving your mouse over the different objects.