An Airplane Is Flying in Horizontal Flight at a Constant

An airplane is flying in horizontal flight at a constant velocity.The weight of the airplane is 40,000 N.The wings produce a lift force that is perpendicular to the wings and a drag force that is parallel to the wing.The engine produces a forward thrust force of 2,000 N.Which of the following statements is true?

A) the net force on the airplane is zero
B) the net force on the airplane is forward
C) the net force on the airplane is upward
D) the net force on the airplane is downward
E) the net force on the airplane is backward

Correct Answer:

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