8. An elevator descends into a mine shaft at the speed of 12 m per minute. If its descent starts from 10 m
above the ground level, how much time will it take to reach -350 m?
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Answer:
30 minute
Step-by-step explanation:
the elevator descend per minute=12m
total ground level=350+10=360.
time it need to reach -350 m =360/12=30mins
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