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[15 pts] When first starting up, a fan’s angular speed can be modelled by the function...

[15 pts] When first starting up, a fan’s angular speed can be modelled by the function ?(?) = (4.20 rad/s2)? + (2.10 rad/s3)?2. a. What is the fan’s average angular acceleration between 2.00 and 4.00 seconds? b. What is the fan’s instantaneous angular acceleration at 2.00 seconds? c. If the fan’s blades are 45.0 cm long, what is the linear acceleration of the tip of a blade at 2.00 seconds?

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