payshencec21
02.07.2019 •
Physics
Ablock of mass 10.1kg rests on a slope an angle of 43.9∘ relative to the horizontal. what is the size of the force parallel to the slope, in newtons? use a gravitational acceleration value of g = 9.8m/s^2.
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Ответ:
Vo = 33.10 [m/s].
Explanation:
Para poder solucionar este problema debemos de utilizar la siguiente ecuacion de la cinematica.
donde:
Vf = velocidad final = 0 (cuando llega a la altura maxima su velocidad es cero)
Vo = velocidad inicial [m/s]
t = la mitad del tiempo, ya que es el tiempo en el cual sube la pelota [s]
g = aceleracion gravitacional = 9.81 [m/s²]
Nota: El signo negativo de la ecuacion es negativo, ya que el movimiento de la pelota hacia arriba es contrario a la aceleracion gravitacional.