h = 80 м
g = 9.8 м/с^2
[tex]h=\frac{gt^{2} }{2}[/tex]
[tex]t=\sqrt{\frac{2h}{g} }[/tex]
[tex]t=\sqrt{\frac{2*80}{9.8} }[/tex]
t=4.04 с
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h = 80 м
g = 9.8 м/с^2
[tex]h=\frac{gt^{2} }{2}[/tex]
[tex]t=\sqrt{\frac{2h}{g} }[/tex]
[tex]t=\sqrt{\frac{2*80}{9.8} }[/tex]
t=4.04 с