rad A disk initially rotates counterclockwise at 1.0 , but has a counterclockwise angular acceleration of S rad 0.50 $ 2 for 2.0 s. After this acceleration, the disk is at an angle of 6.0 rad. What is the disk's angular position when the acceleration started? Answer using a coordinate system where counterclockwise is positive. Round answer to two significant digits. O 5.0 rad 4.0 rad 3.0 rad O 2.0 rad