Question

an elevator descends in to a mine sheft at the rate of 6 metre per minute if the decent start from 50 above the ground level how long will it take two you rich 370 metre
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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

hus, time taken by the elevator to descend −360 m=

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

distance/time

=60 minutes