An elevator descends into a mine shaft at the rate of 6 metre/ minute. if the descend start from 20m above ground level how long will it take to reach -220m
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Answer:
speed: 6m/min
distance above ground= 20 m
we will take it as -20 because the shaft will go 20 m downwards
it has to reach -220 me below ground
total distance to be covered= -220+(-20)
= -220-20 = - 240m
time = distance/speed
= -240/6
= -40
time can never be negative so we will mark it as 40 minutes only
answer :40 minutes
please mark it the brainliest answer
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