Question

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.

Answer 1

21 seconds

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.