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3201
The four forces acting on an airplane in flight are
| * | A) lift, weight, thrust, and drag. |
| | B) lift, weight, gravity, and thrust. |
| | C) lift, gravity, power, and friction. |
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Anonymous says: |
17 Sep 2008 |
The explanation should read: The wording of the question is misleading. As currently stated with the word 'category' being singular, the answer would be [B] because the listed classes are all in one category. If the question were stated "... which are categories of aircraft?" the correct answer would be [A] because these are all separate categories of aircraft.
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