Average speed/velocity

For the search and rescure problem (recall, the plane left Cheynne at 12:15 and travels North 160 km and then 128 km at 30 degrees North of West until crashing at 1:05; the recue plane must fly 250 km in a direction 63 degrees North of West).


What is the magnitude of the plane's average velocity . Average velocity is a vector quantity, defined as the total displacement from point 1 to point 2, divided by total time. Use pollev to enter a numerical value in m/s to one decimal place.

Remember last time we calculated average speed, defined as the total distance travelled divided by total time.