S(t) = 4t³ - 5t
V(t) = S'(t) = (4t³ - 5t)' = 4(t³)' - 5(t)' = 12t² - 5
V(t) = 2
12t² - 5 = 2
12t² = 7
t² = 7/12
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Verified answer
S(t) = 4t³ - 5t
V(t) = S'(t) = (4t³ - 5t)' = 4(t³)' - 5(t)' = 12t² - 5
V(t) = 2
12t² - 5 = 2
12t² = 7
t² = 7/12
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