Question Bank NAT • 1 Mark Section 2: Classical Mechanics Special theory of relativity

QB_PH_050: Special theory of relativity

Question Statement

A meter stick ($L_0 = 1.0\text{ m}$) moves along its length at speed $v = 0.8c$. Its observed length in meters is:
Correct Answer
0.6, 0.6
Verified Key

Step-by-Step KaTeX Derivation & Detailed Explanation

### Solution: $L = L_0 \sqrt{1 - (0.8)^2} = \sqrt{0.36} = 0.6\text{ m}$.
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