A fast-moving superhero in a comic book runs around a circular, 70-m-diameter track five and a half times (ending up directly opposite her starting point) in 3.0 s .

Question

What is her angular speed, in rad/s?

Answer 1

d = 5.5rev * 6.28rad/rev = 34.6 radians.

V = 34.6rad./3s. = 11.5 rad/s.