elevator descends into a mine shaft at the rate of 5 m/min. If the descent starts from 50 m above the ground level, how long will it take to reach – 150 m.
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Question:
An elevator descends into a mine shaft at the rate of 5 m/min. If the descent starts from 50 m above the ground level, how long will it take to reach – 150 m.
Understanding the problem:
We know that,
The elevator travels 5m/min
The elevator is 50 m above ground level
The elevator has to reach -150m below ground level
Solution:
Total distance = 200 m (distance cannot be neative)
Now we divide it by 5
200 m/5m per min
=40 mins
Answer:
40 mins to reach -150 feet underground
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