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
nadya68 [22]
3 years ago
11

The terminal velocity of a person falling through air is about 100Km/hr. The acceleration due to gravity is 10ms−2. Use this inf

ormation to find out what C is in the equation v′=C(gC−v), where g is the acceleration due to gravity and v is the velocity.
Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
8 0

The question here is how long does it take for a falling person to reach the 90% of this terminal velocity. The computation is:

The terminal velocity vt fulfills v'=0. Therefore vt=g/c, and so c=g/vt = 10/(100*1000/3600) = 36,000/100,000... /s. Incorporating the differential equation shows that the time needed to reach velocity v is 

t= ln [g / (g-c*v)] / c. 

With v=.9 vt =.9 g/c,

t = ln [10] /c = 6.4 sec.

You might be interested in
A square is inscribed in the circle. A point in the figure is selected at random. Find the probability that the point will be in
Snezhnost [94]
Ok 
Probability (the point will be on unshaded part)  = area of unshaded part / area of the circle.

=   pi r^2 - s^2
     --------------            where r = radius of circle and s = length of the side of the square.
        pi r^2
4 0
3 years ago
If the point A is located at ( –5, – 3) and A’ is the image of A after being rotated about the origin by 270° (counter clockwise
Ede4ka [16]

Answer:

A'(- 3, 5 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 270°

a point (x, y ) → (y, - x ), hence

A(- 5, - 3 ) → A'(- 3, 5 )

5 0
3 years ago
Whoever answers I’ll mark brainliest
Andre45 [30]

Answer:

x is 60⁰ because 180 - 40 is 120 divide it by 2 because the bottem angles are equal and u get 60

5 0
3 years ago
OLEASE DO THIS ITS EASY PKEAS EI NEED TO FINISH IT NOW PKEASE
KATRIN_1 [288]
For x y chart 19.36.2.27.13
8 0
3 years ago
How to do composition of functions​
KengaRu [80]
<h2><u><em>If you rather have the link to get this info lmk!!</em></u></h2>

Example: f(x) = 2x+3 and g(x) = x2

"x" is just a placeholder. To avoid confusion let's just call it "input":

f(input) = 2(input)+3

g(input) = (input)2

Let's start:

(g º f)(x) = g(f(x))

First we apply f, then apply g to that result:

Function Composition - (g º f)(x) = (2x+3)2

What if we reverse the order of f and g?

(f º g)(x) = f(g(x))

First we apply g, then apply f to that result:

Function Composition - (f º g)(x) = 2x2+3

We get a different result!  When we reverse the order the result is rarely the same.  So be careful which function comes first.

<h2 />
5 0
3 years ago
Other questions:
  • 2. Convert 9% to a fraction and a decimal.
    14·1 answer
  • I don't know how to solve this please help.
    5·2 answers
  • What is the ratio of 1.6 million to 2.3 million
    15·1 answer
  • What is slope when the vertical change is-16 and the horizontal change is 2?
    8·1 answer
  • If the​ length, width, and height of a cube all change by a factor of 7​, what happens to the volume of the​ cube?
    8·1 answer
  • Steven jogs around a circular field with a diameter of 70 yd. Find the area of the field.
    13·2 answers
  • To earn a fitness award, your average heart rate while walking must be between 80 and 89 beats per minute, inclusive. Suppose yo
    10·2 answers
  • It is due in very soon and i don’t wanna fail math. can someone plz help. :/
    8·1 answer
  • What is 2 7/12 written as a decimal?<br><br> OA) 0.2583<br> OB) 2.583<br> OC) 2.583<br> OD) 5.83
    8·1 answer
  • Please Help this is Due in 1 hour and I really dont understand any of this. (Question in Image)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!