Question

An elevator descends into a mine shaft at the rate of 6m/mine. The distance starts from 10 metre above sea level.
(i) Where will it reach in 20 minutes?
(ii) how long will it take to reach a depth of - 350 m

Answer 1

Answer:

350m means 350 meters below the ground level.

initially the levator is at 10m above the ground,

hence, total distance travelled is 350+10=360m

rate of travel is 6m/min

hence, time taken is

total distance

rate of travel

360 = 60min and 1hour

6