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How fast would a rocket have to go relative to an observer for its length to be corrected to 99% of its length at rest. Data: (l)/(l_(0))=99% =(99)/(100), v = ? |
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Answer» SOLUTION :`l=l_(0)sqrt(1-(v^(2))/(c^(2)))` `l=(99)/(100)l_(0)` `(l)/(l_(0))=(99)/(100)` `:. (99)/(100)=sqrt(1-(v^(2))/(c^(2)))` `:.` v = 0.141 C `v=0.141 xx 3 xx 10^(8)` `v=0.423 xx 10^(8) MS^(-1)` |
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