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Aljona1992K
@Aljona1992K
July 2022
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при одномерном движении материальной точки вдоль прямой зависимость координаты от времени задана уравнением x=68+0,3t+0,2t2+0,04t3.определите через какой промежуток времени t после начала движения ускорение тела составит 2м/c2
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au456
Verified answer
V=x'=0.3+0.4t+0.12t^2
a=v'=x"=0.4+0.24t
2=0.4+0.24t
t=20/3 с
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Answers & Comments
Verified answer
V=x'=0.3+0.4t+0.12t^2a=v'=x"=0.4+0.24t
2=0.4+0.24t
t=20/3 с