An airplane is sitting on a runway waiting to take off. The airplane begins to move down the runway and it takes 10 s for the ai

Question

3 years ago

11

An airplane is sitting on a runway waiting to take off. The airplane begins to move down the runway and it takes 10 s for the ai

rplane to leave the ground. The speed of the airplane at takeoff is 40 m/s. What is the acceleration of the airplane while it is moving down the runway?

Physics

1 answer:

Yuliya22 [10] · Answer 1 · 2022-03-07T17:35:04+03:00

Acceleration = (change in speed) / (time for the change)

-- You said that the airplane has to speed up from zero ("sitting") to 40 m/s, so the change in speed is 40 m/s.

-- You said that it has to roll for 10 seconds to build up enough speed to take off, so the time for the change is 10 s .

Acceleration = (40 m/s) / (10 s)

Acceleration = (40/10) (m/s)/s

<em>Acceleration = 4 m/s²</em>

That seems like no problem. It's only like about 41% of 1 G . That would not even spill the drinks in First Class, or wake up the passengers who are already asleep (like me).