The Pythagoras' theorem and the uniform motion allows to find the answer for the rate of change of distance is
v = 32.3 m / s
The distance is the length of the segment that a white house wing with the helicopter, this can be found using the Pythagoras' theorem
R = 
Where R is the distance, x is the horizontal distance where the helicopter flies and y is the vertical distance that corresponds to the flight height
y = 500 m
Since the helicopter flies at constant speed, we can use the uniform motion relation
= 
x = t
Where is the speed of the helicopter and t is the time
We substitute
r = 
Kinematics defines velocity as the change of position in the unit of time
This expression is the change in distance as a function of time for a given speed. In the exercise, this speed is requested for a time of one minute, for the helicopter speed of
v = 2km/min (
) ( 
) = 33.33 m / s
Let's calculate
v = 
v = 32.3 m / s
In conclusion using the Pythagoras' theorem and the uniform motion we can find the answer for the rate of change in distance is
v = 32.3 m / s
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Answer:
The Willamette Valley and Columbia River Gorge is sufficiently complex that is among the most difficult places to predict the weather in the world.
Some of the variables are:
* Direction of surface airflow—usually from the west, but if it changes to be from the southwest it becomes warmer than usual. If it changes to come from the northwest, it becomes colder than normal. If high pressure builds in the western Rockies or even east of the Cascades, easterly flow through the Gorge completely blows NOAA's computer models, though our weather is usually clear and cold in winter and extra hot in summer.
* The position of the jet stream normally meanders from north to south and back over us every few days to weeks. In winter, if it is north of us it pulls in upper level systems from the south possibly bring warm moist air from the subtropics. If the jet stream moves south of us it usually attracts cold moisture-saturated Arctic air causing overcast and cooling.
* If cold air pools in the valleys, it can resist being "blown away" for several days. The colder the harder to move.
* The Coast Range and Tualatin mountains and the Cascades have subtle effects on wind direction and air moisture saturation. Those can change the temperature of the air significantly.
The bottom line is that slight differences in temperature, wind direction, and system movement can have a radical effect on our weather.
One of the examples from the text that can be regarded as clear, logical and sincere is:
- The speaker said, this nation would endure, revive and prosper.
He goes to say that they only thing that they had to fear was fear itself. He said this to show that fear may keep them from advancing when they should have done so.
The president used the words such as revive to show that the nation was still capable of enduring and coming out of the dark times that they were in.
From these words we can see that the president was logical and also sincere in what they were passing through and how they were to overcome it.
<h3>What is a clear, Logical and sincere quote?</h3>
These are words that are said to convey the truth about given situations in simple and well defined terms.
Such words are said to show that the speaker has good reasoning about the subject.
Read more on President Roosevelt's speech:
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