{"result":{"text":"space space space space space space space space space space space space space space space space space space space space space space space space space 1 half m u squared equals 1 half m left parenthesis 0 right parenthesis squared m g l space space space space space therefore space space v equals 0\no r space space space space space space space space space space space space space space space space space space space space space space space space space space space space space v squared minus u squared equals 2 a s\nspace space space space space space space space space space space space space space space space space space space space space space space space space space space space space 0 squared minus u squared equals 2 left parenthesis negative g right parenthesis l\nspace space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space u equals square root of 2 g l end root"},"status":"ok"}