An elevator moves downward in a tall building at a constant speed of 5.70 m/s. exactly 4.95 s after the top of the elevator car passes a bolt loosely attached to the wall of the elevator shaft, the bolt falls from rest. (a) at what time does the bolt hit the top of the still-descending elevator? (assume the bolt is dropped at t = 0 ) estimate the highest floor from which the bolt can fall if the elevator reaches the ground floor before the bolt hits the top of the elevator. (assume 1 floor congruent 3 m.)