Question

A cyclists take two minutes to complete half revolution on a circular path of 120 radius.what is the average speed

Answer 1

Time = 2 min=180 seconds
Total distance traveled= 2r= 240

Average speed = total distance/total time

Avg speed= 240/180
Avg speed = 3m/s

Answer 2

Average speed = Total distance / Time
= Half Circumference / Time
= πR / T
= (π × 120 m) / (2 × 60 seconds)
= π m/s
= 3.141 m/s

[Note: I took radius in meters even though it’s not mentioned in the question]