Bob gets in his car and drives at an average speed of 25 miles per hours (mph) for 4.0 hours due north. He then turns, and drives 75 miles directly east. At that point, Bob turns again and drives 50 miles due south and stops. Draw a diagram with a coordinate system and finds Bob's total displacement for the entire trip. First off to figure out the north direction I used the average velocity formula but instead solved for the displacement of x or change. So it would be distance traveled times the time elapsed or time interval which is 4. (25x4=100). So he goes 100 miles directly north, 75 miles east, and 50 miles south. From this point I always get confused on what to do. I get confused easily with vector problems. Any help would be greatly appreciated. Thank you in advance.