Problem $10\mathrm{.}19$

A cooling fan is turned off when it is running at $850re\frac{v}{m}in.$ It

turns $1350$ revolutions before it comes to a stop.

Part A

What was the fan's angular acceleration, assumed constant?

Express your answer with the appropriate units.

$=$

$x^a$

$x_b$

$\frac{a}{b}$

$x*{10}^n$

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