Aicraft are separated by flight levels, I believe west bound aircraft are even numbers plus five hundred (Altitude) and East bound aircraft are odd numbers plus 500. We learned this in commercial fixed wing training but I ended up in helicopters and we are lucky if we operate above 300 ft 10% of the time. Hope this helps
2 planes. 1 each tower.
Because bad people were driving the planes and made the planes crash on purpose.
Two. One into each tower.
No. One plane crashed into each of them.
Planes seldom crash more than once.
no planes are not perpendicular to each other because for air resistance the planes are designed in a such way that air is avoided to back side and they are inclined to each other.
They would crash their planes into buildings, ships, or other planes to take them down [dying in the process] =[
some ways planes crash is a storm,failing engine,a passed out pilot, and to much cargo
Crash Science - 2005 Planes was released on: USA: 19 October 2006
Yes
the reason why is because the planes were hijacked.
this is because it is verry weak in a crash situation, and planes are not intended to crash at all,