The fastest motion that can be measured in any frame of reference is the speed of light in vacuum, denoted as \( c \), which is approximately \( 299,792,458 \) meters per second (or about \( 3 \times 10^8 \) m/s). According to Einstein's theory of relativity, the speed of light is the maximum speed at which information or matter can travel. No object with mass can reach or exceed this speed in a vacuum; as an object approaches the speed of light, its relativistic mass increases and it would require an infinite amount of energy to reach the speed of light. This principle holds true in all inertial frames of reference.
What is the fastest motion that can be measured in any frame of reference?
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