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 PostsThis Bissell stick vacuum is a budget alternative to Dyson and is only $99 at Walmart'Game of Thrones' series finale preview shows a city of ashMailchimp expands from email to full marketing platform, says it will make $700M in 2019Actors lampoon Constance Wu's reaction to her show being renewedThe who’s who of 'John Wick' ahead of Chapter 3'Game of Thrones' fans react to major death on Mother's Day from hell