1/2*9.8*t^2-0.28=0

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Solution for 1/2*9.8*t^2-0.28=0 equation: 


t in (-oo:+oo)

9.8*(1/2)*t^2-0.28 = 0

4.9*t^2 = 0.28 // : 4.9

t^2 = 0.05714286

t^2 = 0.05714286 // ^ 1/2

abs(t) = 0.05714286^(1/2)

t = 0.05714286^(1/2) or t = -0.05714286^(1/2)

t in { 0.05714286^(1/2), -0.05714286^(1/2) }

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