200=9.8t^2/2

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Solution for 200=9.8t^2/2 equation: 


t in (-oo:+oo)

200 = (9.8*t^2)/2 // - (9.8*t^2)/2

200-((9.8*t^2)/2) = 0

200-4.9*t^2 = 0

-4.9*t^2 = -200 // : -4.9

t^2 = 40.81632653

t^2 = 40.81632653 // ^ 1/2

abs(t) = 40.81632653^(1/2)

t = 40.81632653^(1/2) or t = -40.81632653^(1/2)

t in { 40.81632653^(1/2), -40.81632653^(1/2) }

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