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
5 metre per minute. What will be its position after one
hour?
(ii) If it begins to descend from 15 m above the ground,
what will be its position after 45 minutes?
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
5 metre per minute. What will be its position after one
hour?
(ii) If it begins to descend from 15 m above the ground,
what will be its position after 45 minutes?
Answers & Comments
Answer:
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
5 metre per minute. What will be its position after one
hour?
(ii) If it begins to descend from 15 m above the ground,
what will be its position after 45 minutes?