This simulation allows you to make observations of a virtual object moving with two constant forces acting upon it. [br][br]You can change the magnitude of the forces, the mass of the object, and the initial velocity of the object for a ten second interval. You can also turn on a position vs. time graph for the object over the interval.

[list][br][*]Adjust the magnitudes of the forces using the slider so that it travels at constant velocity.[br][*]Turn on the position vs. time graph to confirm that you have actually set the forces so that it moves at constant velocity. How can you use the graph to check?[br][*]Create three different situations with differently sized forces and initial velocities in which the object moves with constant velocity. What do your three situations have in common?[br][/list]