A high$-$speed drill reaches $2500$ rpmrpm in $0\mathrm{.}57$ ss$.$

Part A

What is the drill's angular acceleration?

Express your answer in radians per second squared.

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rad$/$s$2$rad$/$s$2$

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Part B

Through how many revolutions does it turn during this first $0\mathrm{.}57$ ss$?$

Express your answer in revolutions.

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$=$

nothing

revrev