1. How long will it take a plane to travel 100km [N] if its ground velocity is 796km/h [25 W of N] I am having the hardest time with question since I actually don't know how to start. I know it require the fomula T= V*D. I manage to get a diagram but that is far as I gone. =( Help? I have a final tomorrow and I need to able to do this kind of questions.