Ответ:
E=Ep+Eк
Ep=mgh=0.8*10*2=16Дж
Eк=mv²/2=0.8*0.01/2=0.004
E=16+0.004=16.004 Дж
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Ответ:
E=Ep+Eк
Ep=mgh=0.8*10*2=16Дж
Eк=mv²/2=0.8*0.01/2=0.004
E=16+0.004=16.004 Дж