An elevator starts from the ground floor and reaches the 120th floor in 1 min. It's velocity throughout the journey is 2 floors per sec.
There is a video on youtube, shot from the elevator in the Burj Khalifa and it shows time as start from the ground floor and reaches the 120th floor(approx) in 1 minute(approx). Does that mean that the velocity of the elevator throughout the journey, then is definitely 2 floors/sec(approx)?
The elevator starts from the ground floor and goes up to the 4th floor it drops a person and comes down to the first floor then displacement in both the cases are?
The elevator starts from the ground floor and goes up to the fourth floor. It drops a person and comes down to the first floor. The displacements in both these cases are:
An elevator starts at the basement with 9 people (excluding the elevator operator) and discharges them all by the time it reaches the top floor, which is floor number 6. In now many ways could the operator have perceived the people leaving the elevator if all the people look the same? (there are totally 6 floors excluding the basement)