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Sagot :
muy facil,,,, primero tenes que observar que datos tenes a la mano,,,en el ejercicio dice que la mujer suelta la pesa eso quiere decir que la velocidad inicial es de 0m/s, poruqe no la lanza osea que no le da una velocidad inicial, simplemente la deja caer,,, otro dato que tenes a la mano es la aceleracion de la pesa, ya que todos los cuerpos en caida siempre tendran como aceleracion a la gravedad, osea -9.8m/s^2 (la aceleracion es negativa porque la direccion de la gravedad siempre es hacia abajo),, y el otro dato seria el tiempo que es de 3 segundos,,, con estos datos ya podes calcular la altura del puente con la siguiente formula:
Y=Vo(t)+1/2a(t)^2
Y=(0*3)+1/2(-9.8)(9)
Y=-44.1
la altura del puente es de 44.1 metros
espero te sirva saludos
Y=Vo(t)+1/2a(t)^2
Y=(0*3)+1/2(-9.8)(9)
Y=-44.1
la altura del puente es de 44.1 metros
espero te sirva saludos
The translation is the time the object takes to reach the water at the top is 44.1m
What is the sentence about?
The sentence is about the movement of an object.
So, note that there was zero initial velocity and acceleration is gravity.
So The height is given as:
y= g* t ^ 2/2 =
(9.81m/s^2) * (3s) ^2/2
=44.1m
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