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← ScienceWhich effect dramatically shortens proper transit time at extreme constant speeds?
A)Length contraction shifts spacetime points✓
B)Kinetic energy reaches instability
C)Doppler shifting affects navigation
D)Special relativity causes mass increase
💡 Explanation
Extreme speeds cause length contraction along the direction of travel, shifting intersecting points in spacetime because observers in relative motion experience spacetime differently; therefore proper transit time is reduced, rather than only an increase in relativistic mass.
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