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← ScienceWhich relativistic effect shortens a spacecraft during extreme acceleration?
A)Spacetime length contraction✓
B)Gravitational redshift increases
C)Quantum entanglement amplification
D)Thermal expansion dominates
💡 Explanation
Spacetime length contraction occurs because the spacecraft's dimensions appear shortened relative to a stationary observer due to its velocity, resulting in spatial distortion, rather than gravity effects being primary; therefore, length is contracted, rather than other relativistic effects.
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