Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsBounce Time for a Bouncing Ballhttp://demonstrations.wolfram.com/BounceTimeForABouncingBall/]]>http://demonstrations.wolfram.com/BounceTimeForABouncingBall/Graph of Inequalitieshttp://demonstrations.wolfram.com/GraphOfInequalities/]]>http://demonstrations.wolfram.com/GraphOfInequalities/