University physics 1 show all work please

2). A modern mile is equal to about 0. 71 leagues, an unit of length used in ancient Rome. If a kilometer is about 0.62 miles, what is the approximate speed in meters per second (m/s) of a chariot traveling at 20 leagues per hour? A). 18.3 m/s B). 9.5 m/s C). 6.6 m/s D). 12.6 m/s 3). Vectors A and B are as shown on the grid at right. Which of the vectors shown below best represent vector F given by F = 2A- B. A B)