The angular velocity of a process control motor is w = (20 - t2) rad, where...

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The angular velocity of a process control motor is w = (20 - t2) rad, where t is seconds. a) At what time does the motor reverse direction? b) Through what angle does the motor turn betweent = Os and the instant which it reverses direction? The angular velocity of a process control motor is w = (20 - t2) rad, where t is seconds. a) At what time does the motor reverse direction? b) Through what angle does the motor turn betweent = Os and the instant which it reverses direction?