Question : An elevator car, whose floor to ceiling distance is equal to 2.7𝑚, starts ascending with constant acceleration of 1.2𝑚𝑠 −2. 2 𝑠𝑒𝑐 after the start, a bolt begins falling from the ceiling of the car. The free fall time of the bolt is
(A) \sqrt{0.54}s
(B) \sqrt{6}_{s}
(C) \sqrt{0.7}s
(D) 1 s
Answer : option (C)
Solution :
