"BDS" wrote:


"alexy" wrote

If the conveyor keeps the airplane standing still relative to the ground,
then it cannot take off.
Yeah, but the original statement of the problem made no such claim.

Alex - here is what the statement said:

"An airplane on a runway sits on a conveyer belt that moves in the
opposite direction at exactly the speed that the airplane is moving
forward. Does the airplane take off?" (Assuming the tires hold out, of
course.)

The plane cannot move forward - that means that it is standing still to me.

If the plane does not move forward, how fast is the conveyor moving?
Hint: "a conveyer belt that moves in the opposite direction at exactly
the speed that the airplane is moving forward."

--
Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently.