1. The problem statement, all variables and given/known data An elevator is ascending with a uniform velocity 2 m/s when a loose bolt gets detached from the ceiling and falls on the floor. If the ceiling is 3 m above the floor , find the time required by the bolt to fall from the ceiling to the floor? (g=10 m/s2) 2. Relevant equations 3. The attempt at a solution Relative velocity of bolt with respect to floor before detaching=0 m/s Hence u = 0 m/s So , s=ut + 1/2 at2 =1/2 gt2 Hence , t=0.77 s but solution says that put u= -2 m/s Why this is so??