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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.

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X<br> f(x) = 2x-1 -2 <br><br> Please help
Kobotan [32]

By evaluating the linear equation, we can complete the table:

x: -2 | -1 | 0 | 1 | 2 |

y: -3 | -1 |  1 | 3 | 5  |

<h3>How to complete the given table?</h3>

Here we want to complete the table:

x: -2 | -1 | 0 | 1 | 2 |

y:     |    |    |    |    |

To get the correspondent values in the "y" row, you just need to evaluate the linear function in the given values of x.

Here the function is:

f(x) = 2x - 1

Evaluating it we get:

f(-2) = 2*(-2) + 1 = -3

f(-1) = 2*(-1) + 1 = -1

f(0) = 2*0 + 1 = 1

f(1) = 2*1 + 1 = 3

f(2) = 2*2 + 1 = 5

Now we just put these values in their correspondent place on the table.

x: -2 | -1 | 0 | 1 | 2 |

y: -3 | -1 |  1 | 3 | 5  |

If you want to learn more about linear functions:

brainly.com/question/1884491

#SPJ1

8 0
1 year ago
The surface area of which composite figure is the sum of the areas of eight triangular faces?
ycow [4]

The answer is B)Two rectangular pyramids joined at two congruent lateral faces

4 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B5%7D%20%20-%203" id="TexFormula1" title=" \frac{1}{5} - 3" alt=" \frac{1}
denis-greek [22]
-14/5 , -2.8 and yeah
3 0
3 years ago
Determine whether the triangles can be proved similar. If they are similar, write a similarity statement. If they are not simila
Ierofanga [76]

Answer: \triangle XYZ \sim \triangle GFH by AA.

Step-by-step explanation:

Finding the third angle in triangle XYZ,

m\angle YXZ=180^{\circ}-77^{\circ}-48^{\circ}=55^{\circ},

Thus, \triangle XYZ \sim \triangle GFH by AA.

3 0
1 year ago
PLEASE ANSWER ASAP!!! ILL MARK YOU BRAINLIEST!!<br><br> What is the value of m?
Marizza181 [45]
It's three the m means nothing in this case
6 0
3 years ago
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