A snail on his skate board sets the land speed record at 0.7 c. At rest, the skate board is 0.5 meters long. When moving, how large does the skate board appear to the snail? (The Guinness Book of World Records won't accept skate boards shorter than 0.4 meters)
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1.26 m |
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0,36 m |
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0.50 m |
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0.22 m |
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0.41 m |
L = Lo * sqrt ( 1 - v2 /c2 )
where L is contracted length and Lo is proper length
so,
L = 0.5 * sqrt ( 1 - 0.72 c2 / c2 )
L = 0.5 * sqrt ( 1 - 0.72 )
L = 0.36 meters
A snail on his skate board sets the land speed record at 0.7 c. At rest,...