Mario golpea el balon con el pie para lanzarselo a Tamara que está situada al otro lado de la cancha.El ángulo de salida del balón es de 30° sobre la horizontal y la velocidad a la que sale el balón de la bota de Mario es de 15m/s
¿Cuánto tiempo dura el balón en el aire?
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Answer:
y = 0.99m
Explanation:
This is a projectile launching exercise, let's start by finding the components of the initial velocity, using trigonometry
cos 0 = Vox / Vo
sin 0 =v_{oy} / Vo
Vox = vo cos
v_{oy} = I go sin
Vox = 15 cos 30 = 12.99 m/s
v_{oy} = 15 sin 30 = 7.5 m/s -
Let's find the time it takes to travel x = 18m
x = Vox t
t = x / Vox
t = 18/12.99
t = 1, 385s
at this point it is at a height of
y=v_{oy} - ½ gt²
y = 7.5 1.385 - 12 9.8 1.385²
y = 0.99m
therefore the camera must place the foot 99 cm from the ground
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