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HoranJohn
@HoranJohn
July 2022
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Материальная точка движется прямолинейно с ускорением a(t)=(12t^2+4) м/с. Найдите закон движения точки, если в момент времени t=1 с ее скорость равна 10 м/с, а координата 12 м.
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mikael2
Verified answer
A(t)=12t²+4 v(t)=∫(12t²+4)dt=12/3t³+4t=4t³+4t+c v(1)=8+c=10 c=2
v(t)=4t³+4t+2 м/сек
x(t)=∫(4t³+4t+2)dt=t⁴+2t²+2t +c1 x(1)=5+c1=12 c1=7
x(t)=t⁴+2t²+2t+7 м
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Verified answer
A(t)=12t²+4 v(t)=∫(12t²+4)dt=12/3t³+4t=4t³+4t+c v(1)=8+c=10 c=2v(t)=4t³+4t+2 м/сек
x(t)=∫(4t³+4t+2)dt=t⁴+2t²+2t +c1 x(1)=5+c1=12 c1=7
x(t)=t⁴+2t²+2t+7 м