Question

An elemater descends into a mine shaft at rate of 6 meters per minute if the descend starts from 10 m above the ground level, how long will it take to reach-350 m

Answer 1

Answer:

Distance descended is denoted by a negative integer,

Initial height =+10 m

Final Depth =−350 m

Total distance to be descended by the elevator =(−350)−(+10)=−360 m

Given, the time is taken by the elevator to descend −6 m=1 minute

Thus, time taken by the elevator to descend −360 m= (-360)/(-6) ------- [from the formula :

speed= distance/time

= 1 hour

1 hour is also 60 minutes

so 60 minutes is the Answer