Ответ:
Ек=mv²/2
Eк=100×(10³)²/2=100×10⁶/2=10⁸/2=5×10⁷
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Ответ:
Ек=mv²/2
Eк=100×(10³)²/2=100×10⁶/2=10⁸/2=5×10⁷