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Los datos son:
vi = 0 m/s
vf = 60 km/h
t = 15 s
d = ?
Pasas las unidades al SI
vf = (60 km/h) (1000 m) / (1 km) (1 h) / (3600 s) = 16,67 m/s
Calculamos la aceleración
a = (vf - vi)/t
a = (16,67 m/s - 0 m/s)/15s
a = (16,67 m/s)/15s
a = 1,11 m/s²
Respuesta.
a = 1,11 m/s²
Calculamos la distancia
d = (vf + vi)/2 * t
d = (16,67 m/s + 0 m/s)/2 * 15s
d = (16,67 m/s)/2 * 15s
d = 8,335 * 15
d = 125,03 m
Respuesta.
d = 125,03 m