{"issue":{"state":"closed","pull_request":{"diff_url":null,"html_url":null,"patch_url":null},"user":{"avatar_url":"https://secure.gravatar.com/avatar/96ea3904626fe17bec2152ee31cee0cd?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","gravatar_id":"96ea3904626fe17bec2152ee31cee0cd","url":"https://api.github.com/users/KhanBugz","login":"KhanBugz","id":924247},"milestone":null,"assignee":null,"updated_at":"2011-11-04T19:47:49Z","labels":[{"name":"firefox","color":"e102d8","url":"https://api.github.com/repos/Khan/khan-exercises/labels/firefox"}],"comments":1,"closed_at":"2011-11-04T19:47:49Z","url":"https://api.github.com/repos/Khan/khan-exercises/issues/5238","body":"After solving the quadratic equation, two possible values for time are found:\n\n16.0861571914519 and 16.7000861947915\n\nOnly 16.7 is accepted as correct.\n\nWhy?\n\n[kinematic_equations.html?seed=195&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=195&problem=0&debug)\n\n    [[\"16.1\",\"s\"],[\"16.7\",\"s\"]]\n\nMozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1\n\nMathJax is loaded, ready, queue length: 0\n\n","html_url":"https://github.com/Khan/khan-exercises/issues/5238","number":5238,"title":"Kinematic equations - quadratic equation results in ambiguity","id":2092992,"created_at":"2011-10-31T00:18:57Z"},"action":"closed"}