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28 July, 03:02

An elevator moves at the constant speed of 2 m/s for most of its journey. Estimate the time to travel up a 12-story building in this elevator.

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  1. 28 July, 03:49
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    21 seconds

    Step-by-step explanation:

    Let us assume each story is 3.5 meters. If the building is 12 stories tall, then the elevator needs to travel 3.5*12=42 meters. Using the formula Distance = Speed * time, we get 42 = 2 * t, so t = 21 seconds.
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