Question

An elevator descends in to mineshaft at the rate of 8m / mt.If the descent start from 30 m above the groundlevel , how long will it take to reach ( -610 )m​

Answer 1

Step-by-step explanation:

60 minutes

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=(−6)(−360) ------- [from the formula : speed=timedistance]

=60 minutes