A runner completes an 850m race with two laps of the 425m track in the x-y plane centered at the origin in 1 mins, 50.6s . A runner rounds the track counterclockwise starting at the point (67.6 , 0).

Question

A runner completes an 850m  race with two laps of the 425m  track in the x-y 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.

bobpursley · Answer

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