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10,7 After fixing a flat tire on a bicycle you give the wheel a spin. Its...

10,7

After fixing a flat tire on a bicycle you give the wheel a spin. Its initial angular speed was 5.40 rad/s and it rotated 15.3 revolutions before coming to rest. You may want to review

PART A
What was its average angular acceleration?
Express your answer using three significant figures.

α

α

= ?

PART B
For what length of time did the wheel rotate?
Express your answer using three significant figures.
t

t

= ?.
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