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vi = 80 km/h
a = 3 m/s²
d = 600 m
vf = ?
Pasamos las unidades al SI
80 km/h / 3,6 = 22,22 m/s
Calculamos:
vf² = vi² + 2ad
vf² = (22,22 m/s)² + 2 (3 m/s²) (600 m)
vf² = 493,73 m/s + 2 (1800 m/s²)
vf² = 493,73 m/s + 3600 m/s²
vf² = 4093,73 m/s²
vf = √4093,73
vf = 63,98 m/s
La velocidad es 63,98 m/s