Vf²= Vo² + 2 g y
Vf²= (0) + 2 (9.8 m/s²) (80 m/s)
Vf= raiz de (1568)
vf= 39.5979 m/s
t= vf - vo
-----------
g
t= 39.5979m/s - 0
------------------
9.8 m/s²
t= 4.04 s
Saludos!
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Vf²= Vo² + 2 g y
Vf²= (0) + 2 (9.8 m/s²) (80 m/s)
Vf= raiz de (1568)
vf= 39.5979 m/s
t= vf - vo
-----------
g
t= 39.5979m/s - 0
------------------
9.8 m/s²
t= 4.04 s
Saludos!