Mathematics · Relativity
A rocket is 100 m long when at rest. If it starts to move with a uniform velocity of 0.8c relative to an observer at rest, what will be its length as measured by that observer?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 160 cm
- 260 m✓
- 380 m
- 4100 m
Correct answer
60 m
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