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DATOS:
a = 2m/s² conversion 0.02km/s²
Vf= 90km/h
t=4s
Vi=?
FORMULA:
a = (Vf-Vi)/t despejando --------- Vi = Vf – ta
sustitución y respuesta:
Vi= 90km/h – (4s)(0.02km/s)
Vi= 89.92 km/s.
VERIFICACIÓN:
a= (90km/h - 89.92 km/s) / 4s
a= 0.02km/s2 = 2m/s²