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The elevators in the Landmark Tower, in Yokohama, Japan are among the fastest in the world. They accelerate upward at 3.125 m/s/s for 4.0 s to reach their final speed. If these elevators start from rest, what is their final speed?

Respuesta :

Answer:

12.5

Step-by-step explanation:

Final Velocity=3.124 · 4

MrRoyal

The final speed of the elevator is 12.5 m/s

How to determine the final speed?

The given parameters are:

  • Initial velocity, u = 0
  • Acceleration, a = 3.125 m/s/s
  • Time, t = 4.0s

The final velocity (v) is calculated using:

v = u + at ----- first equation of motion

So, we have:

v = 0 + 3.125 * 4

Evaluate

v = 12.5

Hence, the final speed is 12.5 m/s

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