How to rig up a foosball table to measure velocity of goals? [more inside]
posted by mikeyk on Jun 15, 2009 - 9 answers

what does terminal velocity feel like? [more inside]
posted by compound eye on Feb 19, 2009 - 21 answers

As a purely hypothetical question, if a five-pound cat were to fall from an arbitrarily tall point, how long would it take him to reach terminal velocity? How fast would he be traveling at that point? Part II: If, say, someone was standing at the initial point, how long would it take the cat to drop completely out of sight? What is the longest distance an unaided human eye can perceive an armload-sized object, in other words? Assume the area is lit at about a 60-Watt bulb in a uniform manner. [more inside]
posted by Scattercat on Jan 27, 2009 - 12 answers

An empty field. Nothing for miles and miles and miles. And a gun. I shoot the gun. The bullet blasts out of the barrel and doesn't stop until....well, that's my question. Few more details inside. [more inside]
posted by ryecatcher on Jun 10, 2007 - 19 answers