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During a certain time interval, the angular position of a swinging door is described by ?...

During a certain time interval, the angular position of a swinging door is described by ? = 5.06 + 10.1t + 1.95t2, where ? is in radians and t is in seconds. Determine the angular position, angular speed, and angular acceleration of the door at the following times.

(a) t = 0

? = 5.06 rad
? = 10.1 rad/s
? =  rad/s2


(b) t = 2.99 s

? =  rad
? =  rad/s
? =  rad/s2
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