Una onda mecánica es una onda que no es capaz de transmitir su energía a través del vacío. Las ondas mecánicas requieren un medio para transportar su energía de un lugar a otro. Una onda de sonido es un ejemplo de onda mecánica. Las ondas sonoras son incapaces de viajar a través del vacío. ¡su gráfico está debajo! La amplitud es un parámetro importante de las ondas y es el desplazamiento máximo de puntos en una onda. Dicho de otra manera, la amplitud es la distancia vertical entre un pico o un valle y el punto de equilibrio. La frecuencia es el número de ciclos de ondas que pasan por un punto por unidad de tiempo.
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The velocity of the ball at its maximum height is zero (0).
The given parameters;
- <em>initial vertical velocity of the ball, </em>
<em> = 18.5 m/s</em> - <em>height of the cliff, h = 25</em>
<em />
In a projectile motion, as the object ascends upwards, its vertical velocity decreases and eventually becomes zero as the object reaches maximum height.
This <em>velocity</em> starts to increase again as the object descends downwards and finally becomes maximum before the object hits the ground.
Thus, we can conclude that the velocity of the ball at its maximum height is zero (0).
Learn more here:brainly.com/question/10693605
In order to get a sample of air that is 23 km above the ground, the rocket must rise by that height.
Draw a diagram (shown below) t represent the problem.
The distance h₁ is traveled from A to B with an upward acceleration of 17 m/s² over 30 s. The distance traveled is
h₁ = (1/2)(17 m/s²)(30 s)² = 7650 m = 7.65 km
At point B, the velocity attained is
V = (17 m/s²)30s) = 510 m/s
The distance h₂ is traveled from B to C with gravitational deceleration of -9.8 m/s². The distance traveled is given by
(510 m/s)² - 2(9.8 m/s²)h₂ = 0
h₂ = 13270.4 m = 13.27 km
The total height attained by the rocket is
h₁ + h₂ = 7.65 + 13.27 = 20.92 km
This height falls short of the desired height of 23 km.
Answer:
The rocket does not travel high enough to sample the air at a height of 23 km.
