v=7.8*10^3 W=2*10^11
W=m*v²/2 m=W*2/v²=(2*10^11*2)/(60.84*10^6)=................. кг
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v=7.8*10^3 W=2*10^11
W=m*v²/2 m=W*2/v²=(2*10^11*2)/(60.84*10^6)=................. кг