S(t) = 1/3 t³ + 2t² - 4
V(t) = S'(t) = t²+4t
a(t) = V'(t) = 2t+4
a(1) = 2+4 = 6 м/с²
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S(t) = 1/3 t³ + 2t² - 4
V(t) = S'(t) = t²+4t
a(t) = V'(t) = 2t+4
a(1) = 2+4 = 6 м/с²