According to Einstein\'s equivalence principle, which of the following cannot be

Question

According to Einstein's equivalence principle, which of the following cannot be distinguished from a system accelerating with uniform acceleration in the presence of no gravity by any measurement within the system?

A) a system that is moving at the speed of light

B) a system moving with constant velocity in the presence of no gravitational force

C) a system that is not accelerating, but is subject to a uniform gravitational acceleration

D) a system that only contains massless objects

E) a system in free fall

A) a system that is moving at the speed of light

B) a system moving with constant velocity in the presence of no gravitational force

C) a system that is not accelerating, but is subject to a uniform gravitational acceleration

D) a system that only contains massless objects

E) a system in free fall

Explanation / Answer

C) a system that is not accelerating, but is subject to a uniform gravitational acceleration

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