Posted by Tig on .
A runner completes an 850m race with two laps of the 425m track in the xy plane centered at the origin in 1 mins, 50.6s . A runner rounds the track counterclockwise starting at the point (67.6 , 0).
Find the runner's average velocity for the race.
Find the runner's average speed for the race.

Physics 
bobpursley,
avg velocity= change displacement/time=0
avg speed= distance/time=850m/110.6s