seorang pengamat di stasiun ruang angkasa

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell v apostrophe end cell equals cell fraction numerator v subscript A plus v subscript B over denominator 1 plus begin display style fraction numerator v subscript A v subscript B over denominator c squared end fraction end style end fraction end cell row blank equals cell fraction numerator begin display style 3 over 4 end style c plus begin display style 3 over 4 end style c over denominator 1 plus begin display style fraction numerator 3 over 4 c cross times 3 over 4 c over denominator c squared end fraction end style end fraction end cell row blank equals cell fraction numerator begin display style 3 over 2 c end style over denominator 1 plus begin display style 9 over 16 end style end fraction end cell row blank equals cell fraction numerator begin display style 3 over 2 c end style over denominator begin display style 25 over 16 end style end fraction end cell row blank equals cell fraction numerator 3 cross times 16 over denominator 2 cross times 25 end fraction c end cell row blank equals cell 24 over 25 c end cell end table end style

Maka kelajuan pesawat A menurut pilot pesawat B adalah begin mathsize 14px style 24 over 25 c end style.

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