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seropon [69]
3 years ago
15

Un camion de envios se encuentra detenido en una señal de pare, permitiendo que pase una ambulancia. Inicia su recorrido y al ca

bo de 15 segundos alcanza una velocidad de 40 km/h esta se mantiene constante drante 20 s, observa una señal de pare y se detiene 8s despues ¿cual es la aceleracion del camion en el primer intervalo de tiempo?
Physics
1 answer:
Nesterboy [21]3 years ago
4 0

Answer:

0.741\ \text{m/s}^2

Explanation:

v = Velocidad final = 40\ \text{km/h}=\dfrac{40}{3.6}\ \text{m/s}

u = Velocidad inicial = 0

t = Tiempo empleado = 15 s

a = Aceleración

De las ecuaciones cinemáticas tenemos

v=u+at\\\Rightarrow a=\dfrac{v-u}{t}\\\Rightarrow a=\dfrac{\dfrac{40}{3.6}-0}{15}\\\Rightarrow a=0.741\ \text{m/s}^2

La aceleración del camión en el primer intervalo de tiempo es 0.741\ \text{m/s}^2.

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