An elevator descends into a mineshaft at the rate of 7m per minute. If the descent starts 15m above the ground level, how long will it take to reach 209 mbelow the ground level?
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Step-by-step explanation:
Total distance to cover = 209 m + 15 m above ground = 224 m
Speed of Elevator = 7 m / min
So 7/60 m/s is the speed
time = speed into distance = 7/60 x 224 = 26.13 minutes or approximately 26 seconds to reach that level
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