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h = 4900 m
g = 9,8 m/s²
t = ?
vf = ?
Calculamos el tiempo.
t = √2h/g
t = √2 (4900 m) / 9,8 m/s²
t = √9800 m / 9,8 m/s²
t = √1000 s²
t = 31,6 segundos-------Respuesta
Calculamos velocidad..
vf = vi + gt
vf = gt
vf = (9,8 m/s²) (31,6s)
vf = 309,68 m/s-------Respuesta