- John Golden
Inspired by a Twitter problem posed by Bowman Dickson. How long is the escalator? All you have control over is how fast you are walking, in ft/sec. Is there even enough information to solve the problem? See the original problem at http://mathhombre.tumblr.com/post/27719574817/escalator You can set up comparinsons of two different walking speeds, or comparing moving and standing.
More GeoGebra at http://mathhombre.blogspot.com.