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vi = 0 m/s
vf = 40 km/h
t = 4s
a = ?
40 km/h / 3,6 = 11,11 m/s
Calculamos la aceleración.
a = (vf - vi)/t
a = (11,11 m/s - 0 m/s)/4s
a = (11,11 m/s)/4s
a = 2,78 m/s²
La aceleración es 2,78 m/s²