Ответ:
E=mv^2/2
2E=mv^2
m=2E/v^2=2×40×10^9/(7700)^2=1.34×10^3кг=1.34т
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Ответ:
E=mv^2/2
2E=mv^2
m=2E/v^2=2×40×10^9/(7700)^2=1.34×10^3кг=1.34т