1. A person standing motionless between a straight highway and an airport runway. A truck drives by the person at constant speed, while an airplane accelerates down the runway for take off. Of the person, truck, and airplane, which are an inertial frame of reference?

A. truck and airplane only
B. person and truck only
C. person only
D. person, truck, and airplane

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1 answer

All inertial frames are in a state of constant, rectilinear motion with respect to one another; an accelerometer moving with any of them would detect zero acceleration.
The airplane cannot be in the inertia frame of reference, it is accelerating.