1.15. Irodov

The seller is blocked and sales of the product are suspended

1.15. The cabin lift in which the distance from floor to ceiling 2.7 m, began to rise with acceleration a = 1,2 m / s2. After 2.0 seconds after the beginning of the ascent to the cabin ceiling was falling bolt.
Find:
a) the free fall of the bolt;
b) the movement and the path of the bolt during the free fall in the reference frame associated with the elevator shaft.