A multistorey building has its parking floor at the basement. A lift moves at the rate of 4m per 15 seconds. If the lift starts coming down from a height of 40 m, then find its position after 3 minutes.
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Sure, here is your answer:
Speed of the lift per minute: 4m. / 15 seconds = 16m. / minute
The time given: 3m minutes
So, the distance covered in 3 minutes = 16*3 = 48m.
It's current height = 40 m.
Position after coming down for three minutes = 40 - 48 = -8 m. (8 meters under the ground.
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