Question

FUS After takeoff, an aircraft enters a straight-line flight path with constant speed at point P(1.5|9|0.5). speed. In one minute it travels a distance vector v=(-1 5 0.2) back. Information in km. a) (1) Determine the speed of the aircraft in km/h. (2) After 4 minutes the plane reaches a big city. Calculate the altitude at this time. b) At an altitude of 2500 m the pilot switches to autopilot. Calculate the coordinates of the point where the aircraft is at this moment and state how much time has passed since the aircraft was at point P. c) Between the points A(-5|38|0.1), B(-4|40|0.11) and C (-7|39|0.1) there is a small natural protected area in the shape of a triangle. (1) Examine triangle ABC for special features. (2) Check whether the aircraft is flying over route AB and, if so, at what distance

60

likes
301 views

Answer to a math question FUS After takeoff, an aircraft enters a straight-line flight path with constant speed at point P(1.5|9|0.5). speed. In one minute it travels a distance vector v=(-1 5 0.2) back. Information in km. a) (1) Determine the speed of the aircraft in km/h. (2) After 4 minutes the plane reaches a big city. Calculate the altitude at this time. b) At an altitude of 2500 m the pilot switches to autopilot. Calculate the coordinates of the point where the aircraft is at this moment and state how much time has passed since the aircraft was at point P. c) Between the points A(-5|38|0.1), B(-4|40|0.11) and C (-7|39|0.1) there is a small natural protected area in the shape of a triangle. (1) Examine triangle ABC for special features. (2) Check whether the aircraft is flying over route AB and, if so, at what distance

Expert avatar
Santino
4.5
112 Answers
a)
(1) Zur Bestimmung der Geschwindigkeit des Flugzeugs in km/h teilen wir die zurückgelegte Strecke durch die Zeit:
\text{Geschwindigkeit } = \frac{\text{Strecke}}{\text{Zeit}} = \frac{\|\textbf{v}\|}{\text{Zeit}}

Gegeben: $\textbf{v} = (-1, 5, 0.2)$ km und Zeit = 1 Minute = 1/60 Stunde.

Berechnung der Geschwindigkeit:
\|\textbf{v}\| = \sqrt{(-1)^2 + 5^2 + 0.2^2} = \sqrt{1 + 25 + 0.04} = \sqrt{26.04} \approx 5.10 \text{ km}
\text{Geschwindigkeit} = \frac{5.10}{1/60} = 5.1 \times 60 = 306 \text{ km/h}

(2) Die Flughöhe nach 4 Minuten beträgt:
Höhe = 9 + (4 * 0.2) = 9.8 km

b)
Bei einer Höhe von 2500 m = 2.5 km schalten wir auf Autopilot um.

Die Koordinaten des Flugzeugs ergeben sich durch Addition des Vektors $\textbf{v}$ zum Punkt P:
(1 + (-1), 5 + 5, 0.5 + 0.2) = (0, 10, 0.7)

Die Zeit, die seit dem Punkt P vergangen ist, beträgt:
\frac{\sqrt{(0-1)^2 + (10-5)^2 + (0.7-0.5)^2}}{5.1} = \frac{\sqrt{1 + 25 + 0.04}}{5.1} \approx \frac{\sqrt{26.04}}{5.1} \approx \frac{5.1}{5.1} \approx 1 \text{ Stunde}

c)
(1)
Das Dreieck ABC ist ein gleichschenkliges Dreieck, da AB und BC jeweils die gleiche Länge haben.

(2)
Um zu prüfen, ob das Flugzeug die Strecke AB überfliegt, betrachten wir den Abstand des Flugzeugs von der Linie, die durch die Punkte A und B verläuft. Der Abstand kann durch den Normalenvektor auf die Ebene von A und B bestimmt werden.

Den Normalenvektor der Ebene bestimmen:
\textbf{n} = (A-B) \times (A-C) = \begin{pmatrix} -5+4 \ 38-40 \ 0.1-0.11 \end{pmatrix} \times \begin{pmatrix} -5+7 \ 38-39 \ 0.1-0.1 \end{pmatrix} = \begin{pmatrix} -1 \ -2 \ -0.01 \end{pmatrix} \times \begin{pmatrix} 2 \ -1 \ 0 \end{pmatrix}
= \begin{pmatrix} 0.01 \ -0.02 \ -3 \end{pmatrix}

Der Abstand des Flugzeugs von der Ebene beträgt:
\frac{| \textbf{n} \cdot (P - A) |}{\|\textbf{n}\|} = \frac{| \begin{pmatrix} 0.01 \ -0.02 \ -3 \end{pmatrix} \cdot \begin{pmatrix} 1 \ 5 \ 0.5 \end{pmatrix} - \begin{pmatrix} 0.01 \ -0.02 \ -3 \end{pmatrix} \cdot \begin{pmatrix} -5 \ 38 \ 0.1 \end{pmatrix} |}{\sqrt{0.01^2 + (-0.02)^2 + (-3)^2}}

= \frac{| (0.01 \cdot 1 + (-0.02) \cdot 5 + (-3) \cdot 0.5) - (0.01 \cdot (-5) + (-0.02) \cdot 38 + (-3) \cdot 0.1) |}{\sqrt{0.01^2 + (-0.02)^2 + (-3)^2}}

= \frac{| 0.01 - 0.1 + 1.5 - 0.76 |}{\sqrt{0.01^2 + (-0.02)^2 + (-3)^2}} = \frac{| 2.67 |}{\sqrt{9.05}} \approx \frac{2.67}{3} \approx 0.89 \text{ km}

Antwort: a) (1) Die Geschwindigkeit des Flugzeugs beträgt 306 km/h.
b) Nach 4 Minuten beträgt die Flughöhe 9.8 km. Die Koordinaten des Flugzeugs sind (0, 10, 0.7) und es ist 1 Stunde vergangen, seit es sich im Punkt P befand.
c) (1) Das Dreieck ABC ist gleichschenklig.
(2) Das Flugzeug überfliegt die Strecke AB in einem Abstand von etwa 0.89 km.

Frequently asked questions (FAQs)
What is the derivative of f(g(h(x))) with respect to x for Chain rules variants?
+
What is the resultant displacement if a vector of magnitude 30 units is added to a vector of magnitude 20 units in the opposite direction?
+
What is the length of the altitude drawn to the hypotenuse in a right triangle with sides 5 and 12?
+
New questions in Mathematics
One contestant on a game show has 1,500 points and another contestant has -250 points. What is the difference between the scores of the contestants?
QUESTION l. An investigation has been carried out in a region to know the perception of "citizen insecurity" of its inhabitants. 1,270 people in the region were interviewed, of which 27.1% responded that it was a "serious" problem. Knowing that this opinion was previously held by 25.3% of the population of that region, we want to know if said opinion has changed significantly for a confidence level of 97.2%. Taking this statement into account, the following is requested: a) Critical value of the contrast statistic. b) Solve the hypothesis test and indicate what conclusion we can reach. c) P-value of contrast.
A person who weighs 200 pounds on earth would weigh about 32 pounds on the moon. Find the weight of a person on earth who would weigh 15 pounds on the moon.
Using the integration by parts method, calculate the integral of [x².ln(1/x)]dx: x 4 /4 x³/6 x 4 /8 x³/3 x 4 /6
The bus one way of the road which is 10km is heading with speed of 20km/h ,then the bus the other 10km is heading with speed of 60km/h. The middle speed of the road is it equal with arithmetic speed of the v1 and v2 ?
9b^2-6b-5
-0.15/32.6
4. Show that if n is any integer, then n^2 3n 5 is an odd integer
At the dance there are 150 boys the rest are girls. If 65% are girls what is the total amount in the room
The grading on a $159,775 house comes to $3974.75. What percent of the total cost is this? (Express your answer to the nearest hundredth percent.)
How to factorise 5y^2 -7y -52
Consider mixing 150 ml, 0.1M, HCI with 100 ml, 0.2M, KOH solution. Determine the pH of final solution.
Solve the following 9x - 9 - 6x = 5 + 8x - 9
Convert (324)𝑓𝑖𝑣𝑒 into base-ten
Recall that with base- ten blocks, 1 long = 10 units, 1flat = 10 long, and a block = 1 unit. Then what number does 5 flat, 17long and 5 units represent represent ?
The perimeter of a rectangular rug is 42 feet. The width is 9 feet. What is the length?
Define excel and why we use it?
23,456 + 3,451
The car with an irresponsible driver starts to brake when it goes through a red light. When passing the traffic light, he does so at a speed of 115 kph in the right lane. Further ahead, 70 meters from the traffic light, a child is crossing the street and falls. If the effect of the car's brakes is equivalent to a deceleration of magnitude 5.7m/s². Is the child hit by the car or not? How far from the traffic light does the car stop?
Construct a set of six pieces of data with​ mean, median, and midrange of 67 and where no two pieces of data are the same.