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vi = 10 cm/s
vf = 45 km/h
a = 2,5 cm/s²
t = ?
Pasamos los km/h a cm/s
1 km/h = 27,7778 cm/s
27,7778 * 45 = 1250 cm/s
Calculamos el tiempo.
t = (vf - vi)/a
t = (1250 cm/s - 10 cm/s)/2,5 cm/s²
t = (1240 cm/s)/2,5 cm/s²
t = 496 s