일반물리학 1 — Motion in Two and Three Dimensions: Problem 8

8 A plane flies 483 km east from city A to city B in 48.0 min and then 966 km south from city B to city C in 1.50 h. For the total trip, what are the (a) magnitude and (b) direction of the plane’s displacement, the (c) magnitude and (d) direction of its average velocity, and (e) its average speed?