Question

An elevator descends into a mine shaft at the rate of 6m/min. if the descent starts from 10 metre above ground level how long will it take to reach - 350 m​

Answer 1

Answer:

the descent starts from 10 m above the ground level, how long will it take to reach – 350 m. but, it moves in opposite direction so it travels the distance (-350 m ) below the ground. thus, in one hour the mine shraft reaches = 350 below the ground.