"Can you add 3 unit vectors to get a unit vector ? discuss in terms of velocity, force etc" -Sindhuja posted The answer is yes. Please find a detailed description on addition of vectors with examples and exercises at the following links. http://www.physchem.co.za/Vectors/Addition.htm http://www.physchem.co.za/Vectors/Physical%20Examples.htm http://www.physicsclassroom.com/class/vectors/u3l1b.cfm http://www.walter-fendt.de/ph14e/resultant.htm http://canu.ucalgary.ca/map/content/vectors/addition/explain/tiptail/ http://www.physicsclassroom.com/morehelp/vectaddn/practice.cfm