Question

an elevator descends into a mine shaft at the rate of 6 meters per minutes. If the decent starts from 20 m above the ground level, how long will it take to reach -340m? ​

Answer 1

Since it starts from 20 m total distance will be 20 + 340 = 360m

rate is 6m/min

so time taken = 360 / 6 = 60 min

or 1 hour