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Suppose we represent the distance above the ground by a positive integer and that blow the ground by negative Integer if an elevator descenfs at a rate of 5 metre per minute and begin to descends from 15m above the ground,what will be its position after 45 |
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Answer» Given : an elevator descends at a rate of 5 metre PER minute and begin to descends from 15m above the ground To find : Position of elevator after 45 SEC Solution: elevator begin to descends from 15m above the ground => initial position = + 15 m elevator descends at a rate of 5 metre per minute => elevator descend in 60 secs = 5 m => elevator descend in 1 secs = 5 /60 m => elevator descend in 45 secs = 45 * 5 / 60 = 3.75 m Position of elevator after 45 sec = 15 - 3.75 = 11.25 m Position of elevator is 11.25 m above ground after 45 secs Learn more: in e l e v a t o R is 12 metres below ground descends to a point ... An elevator descends into a mine shaft at the rate of 6 m/min. If the ... |
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