FAA Questions/Flight Instructor/Question #62
performanceFAA-published sample question (FIA, Aug 2021)

How does increased weight affect the takeoff distance of an airplane?

A

The airplane will accelerate more slowly with the same power output, but the same airspeed is required to generate necessary lift for takeoff.

B

The airplane will accelerate more slowly with the same power output, and a higher airspeed is required to generate necessary lift for takeoff.✓ Correct Answer

C

Every airplane has the same acceleration factor with the same power output, but a higher airspeed is needed to overcome the increased ground effect.

Explanation

PHAK Chapter 11 explains that more weight lengthens the takeoff in two ways: the greater mass accelerates more slowly for the same power, and a higher liftoff airspeed is needed because stall speed rises with weight. So the airplane accelerates more slowly and needs more airspeed; acceleration is not the same for every airplane.

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