A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr.

Question

At what angular speed do the wheels turn?
answer is 23.8

but still not sure how to find the time
How long do they take to turn once around?

Answer 1

YEs, that is what period is.

if it goes 23.8rad/sec, then it goes 23.8rad/sec*1rev/2PI rad or 3.79rev/sec, so period is 1sec=3.79rev or one rev=.264sec, so period is .264sec