Physics
posted by Hannah .
The angular speed of a propeller on a boat increases with constant acceleration from 12 rad/s to 26 rad/s in 2.5 revolutions. What is the acceleration of the propeller?

Angular acceleration = (26  12)/Time
For the Time, use this equation
(Avg. Angular speed) x time
= 2.5*2 pi radians
Time = 0.827 s
Angular Acceleration
= [14 rad/s]/0.827 s
= ? rad/s^2
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