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tiaggschar
tiaggschar tiaggschar
  • 15-08-2016
  • Physics
Answered

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?

Verified Answer :

HomertheGenius
HomertheGenius HomertheGenius
  • 17-08-2016

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

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