Question

A cyclist moving on a circular track of radius 50m completes one revolution in 4min.what is his (a)average speed (b)average velocity in one full revolution?

Answer 1

Distance of the circular track = 2πr = 314.16 m
Average speed = Total distance / Total Time
= 1.309 m/s
Displacement = 0
Average velocity = 0

Answer 2

Answer:

Average speed = total distance/total time taken

Total distance = 2πr

=2×22/7×50

=314.28m

Total time= 4min= 4×60=240sec

Average speed= 314.28/240=1.309m/s

Average Velocity= total displacement/total time

Displacement= 0 ( because the initial position and final position of cyclist is same)

Time = 240

Average velocity= 0/240

=0