1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lilit [14]
3 years ago
9

A stranded soldier shoots a signal flare into the air to attract the attention of a nearby plane. The flare has an initial veloc

ity of 1500 feet per second. Its height is defined by the quadratic function below. Assume that the flare is fired from ground level. h=ViT-16t^2
1. When will the fare reach 35,156.25 feet?? 
2.If the plane is flying at a height of 30,000 feet, a speed of 880 feet per second and is 50,000 feet fro the fare when it is fired, will the flare hit it? If so, tell when this will happen. If not, tell when the fare reaches the planes altitude.
Advanced Placement (AP)
1 answer:
Anettt [7]3 years ago
5 0

<span>
1 . when will the fare reach that height:</span>

<span>The ascending and descending time are equal but let's show it: set the h = 0 </span>

<span>
1500t - 16t^2 = 0 => solve the quadratic </span>

<span>
t = 0 => reject </span>

<span>
t = 375/4 seconds => period to hit the ground, notice that this is twice the time to reach max h. </span>

 

2. If the plane … solution:

<span>d = vt </span>

<span>
t = d/v </span>

<span>
= 50,000/880 </span>

<span>
It is approximately 56.8 sec to reach the flare but the flare reached max h at 375/8 ≈ 46.9 sec, so it won't hit the plane going up, but will it hit the plane on its way down from 35,156.25 ft.</span>

You might be interested in
Which of the following areas gives people access to both high-paying jobs
Julli [10]

Answer:

the suburbs

Explanation:

8 0
3 years ago
Read 2 more answers
One of the first results of industrialization was ______.
Sholpan [36]

Increased in occupational specialization  in industrial field

5 0
3 years ago
The fusion of two deuterium nuclei requires extreme temperatures and _____. radioactive fuel cold water high pressure
inysia [295]
The answer is high pressure. In a nuclear reaction process, high temperature and high pressure is required for turning hydrogen nuclei into a helium nucleus. It is impossible for it to happen simultaneously because it requires tremendous amounts of energy. Extreme conditions are required for the atoms to overcome electrostatic repulsion.
7 0
3 years ago
Read 2 more answers
Why does Bob pretend to have certain psychological disorders?
Stells [14]

Bob is just a human like us and feels stuff, its probaly due to his environment and pressures/stress but heck who really knows. Bob is Bob. and that is that.

7 0
3 years ago
Read 2 more answers
When performing an oil change, start the engine and observe the _______ within a few seconds once the engine is running. A. malf
IRINA_888 [86]
 C. oil - warning light

If you see the light light up, then it means that the oil is low, which means that you will have to refill it.

hope this helps
8 0
3 years ago
Other questions:
  • 1. National Fire Protection Association (NFiPA) 704 diamond label system helps firefighters and employees easily recognize the c
    7·2 answers
  • Ecology is one component of Environmental Science that studies organismal __________. A) chemistry B) anatomy C) interactions D)
    6·1 answer
  • What would help sober up a BAL
    8·1 answer
  • What technological and social changes occurred between the Paleolithic ('Old Stone Age') to the Neolithic (New Stone Age') perio
    13·2 answers
  • How much is the Bugatti Chiron Super Sport 300+ and how fast is it?
    10·2 answers
  • Give an example of a the following:<br>a. core:<br>b periphery:<br>c. uneven development:​
    10·1 answer
  • One study has reported that the sensitivity of the mammogram as a screening test or detecting breast cancer is 0.88 while the sp
    9·1 answer
  • This cars is racing on a gravel track. All BUT ONE statement helps explain how this race car illustrates Newton's third law of m
    9·2 answers
  • Simplify the polynomial by combining like terms.<br> 4.78x^2-3.55x+7.85x^2+10.35-4.06x
    6·1 answer
  • PLEASE HELP!!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!