filter
  • Subject:

    ...

  • Topic:

    ...

An elevator car, whose floor to ceiling distance is equal to 2.7 m, starts ascending with constant acceleration of 1.2 ms–2. 2 sec after the start, a bolt begins fallings from the ceiling of the car. The free fall time of the bolt is 

(1) 0.54s

(2) 6s

(3) 0.7 s

(4) 1 s