The Physics of Throwing a Big Sack Over Trump's Beautiful Wall Ifeadi C. 15:59 WIRED, Zero Tech Blog So what kind of energy does it take, and what on earth happens if that sack lands on someone? via Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsHow the Kairos Society Is Elevating Young TechiesMeet Penny, an AI That Predicts a Neighborhood’s Wealth From SpaceY Combinator Has Gone SupernovaThe X Prize Is Now Backing Sci-Fi Like It Backs IRL ScienceInside Apple's 6-Month Race to Make the First iPhone a RealityResearchers Found They Could Hack Entire Wind Farms