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 3.0s, what is her angular speed, in rad/s?

asked Jan 16, 2017 83.2k views

3 votes

by Aerim

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6 votes

Angular speed :
ω = D/t
D - rotational distance traveled, D = 2 π · 5.5 = 11 π
ω = 11π/3 rad / s ≈ 11.513 rad/s

Kyle Erickson answered Jan 20, 2017

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