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Air100Cake
@Air100Cake
July 2022
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Тело массой 100 кг движется прямолинейно по закону s=2t^2+3t+1.Найти кинетическую энергию тела через 5 сек после начала движения.
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tana20101997
Verified answer
V(t)=4*t+3
V(5)=4*5+3=23 м/с
Ek=m*V^2/2=0,1*23^2/2=26,5 Дж
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Answers & Comments
Verified answer
V(t)=4*t+3V(5)=4*5+3=23 м/с
Ek=m*V^2/2=0,1*23^2/2=26,5 Дж