You drive 109 km/h east for 31 min , then 82 km/h north for 42 min . Let the +x-axis point east and the +y-axis north.
Find your average velocity for the entire trip.
Find your average speed for the entire trip.
average velocity = displacement vector / time
Hypotenuse/time and angle
average speed = distance scalar/time
sum of x and y distances/time