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I hate well meaning but incorrect questions. If a student has a little more
knowledge than the questioner, the student loses credit.
The lift vector is not in the opposite direction to the
weight during straight and level flight.
It is tilted somewhat to the rear
of the aircraft. If the wing does not have an effective angle of attack,
there is no lift generated.
Horizontally, you have thrust forward, with drag
and a horizontal component of lift acting backward.
I've always thought of drag as being opposite the velocity of the
object, the airplane in this case. This is probably true in "still
air."
However, I can see that if there's a crosswind, that would change the
direction of drag.