Gmail

YouTube Maps

Question 4

العزلة والشهرة والحزن.....

Airport runways are generally designed with a buffer

zone around 300 m long beyond the runway end, to

accommodate aircraft that land too fast or too far down

the runway and go off the end. Where that's not possible,

airports are increasingly installing so-caled Engineered

Material Arresting Systems (EMAS) to prevent runaway

aircraft from entering nearby roads, neighborhoods, or

waterways. One such system, at New York's JFK airport,

consists of a 132-m-long bed of crushable cement

blocks.

Part A

Submit

Provide Feedback

Request Answer

?

C

What average force must this system exert on a 55-Mg jotlinor that enters the arrestor bed at 37 m/s if the jet is to stop 100 m into the

bed?

Take the direction of the plane to be positive. Express your answer using two significant figures.

195] ΑΣΦΑ

kN

2

K Paused

4 of 20

Constants

Next >