Answer the following below.

A grinding wheel powered by electricity is rotating at 71.3 rad/s when it initially undergoes constant angular acceleration of 4.82 rad/s until the electricity is cut off after 12.7 s. From then on, the rotation of the wheel slowed down until it eventually come to a stop. If the wheel has turned a total of 387 rev during the whole course of its motion, what is the magnitude ofthe angular acceleration ofthe wheel as it slowed down? 0 2.09 radians per seconds squared O 5.61 radians per seconds squared O 18.9 radians per seconds squared O 7.72 radians per seconds squared On an amusement park ride, passengers are seated in a horizontal circle of radius 7.99 m. The ride begins from rest and uniformly accelerated over 1.21 s for which it has rotated 0.263 rad. At this instant, what is the resultant linear acceleration of the passengers seated on the outermost part of the ride? 0 1.51 meters per seconds squared O 3.24 meters per seconds squared O 2.87 meters per seconds squared O 0.359 meters per seconds squared