Question

an elevator descends into a mine shaft at the rate of 7m/ min if the Descent starts from 5 m above the ground level how long will it take to reach -205.
please send full explanation​

Answer 1

Answer:

The ground level is 0m

The Descent above ground is 5m

The Descent below ground is 205m

Total Descent = 210m

The elevator descents at a rate of 7m per minute

So, dividing 210 with 7, we get...

210/7 = 30 mins

So, it takes 30 minutes or ½ hour to descend from +5m to -205m