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t = 10s
d = 20m
a =?
d = Vot + at²/2
a = 2d/t²
a = 2×20m/(10s²)
a = 40m/100s²
a = 0.4m/s²
¿Qué tiempo necesitará para alcanzar 40 km/h?
Datos
Vo = 0
t =?
a = 0.4m/s²
Vf =40km/h×1000m/1km×1h/3600s = 11.11m/s
Vf = Vo + at
t = (Vf - Vo)/a
t = 11.11m/s /0.4m/s²
t = 27.78s