Question

Q10. Suppose we represent the distance above the ground by a positive integer

and that below the ground by a negative integer, then answer the following:

i) An elevator descends into a mine shaft at the rate of 5m per minute. What will

be its position after one hour?

ii) If it begins to descend from 15m above the ground, what will be its position

after 45 minutes?
.... plz help me ....
to find answer​

Answer 1

Answer:

i) Starting point = 0

Distance traveled in 1 minute = (-5)m

Distance traveled in 60 minutes = (-5)×60m = -300 m

The position is -300

ii) Starting point = 15

Distance traveled in 1 minute = (-5)m

Distance traveled in 45 minutes = (-5)×(45 - 15÷5 )m

= -5 × 42

= -210m

The position is -210

Step-by-step explanation:

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