An elevator descends from 10th floor to 2nd floor below ground floor (2nd basement). The vertical distance between any two floors Is 3m. If the total time taken by the elevator is 18 seconds, find its speed of descend in m/sec.
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elevator descends from 10th floor to 2nd floor below ground floor (2nd basement). The vertical distance between any two floors Is 3m. If the total time taken by the elevator is 18 seconds, find its speed of descend in m/sec
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