Un tren viaja a una velocidad constante de 70km/h y pasa una señal en rojo, a 60 metros de pasar la señal comienza a reducir su velocidad a razón de 2m/s2 ¿ a que distancia de la señal se detiene por completo ? ¿ cuanto tarda en hacerlo a partir del momento en el que pasa la señal?
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Un tren viaja a una velocidad constante de 70km/h y pasa una señal en rojo, a 60 metros de pasar la...
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