A 20 N model rocket launched vertically is clocked at 25 m/s when it is 15 m above the ground (and has expended a negligible amount of fuel). Use the work–energy principle to find the rocket’s initial speed.
27.4 m/s
40.2 m/s
17.8 m/s
30.3 m/s

Answers

Answer 1

30.3 m/s is the correct answer.


Related Questions

A triangle has a base of 7cm and an area of 28cm². What is the height?

Answers

I’m not so sure man is that there are no problems with the app and ywiitw is not really good for me to get the word to it and it’s wyttw and the same thing is

A weight loss organization has a new member who weighs 240 pounds. After 6 months the member hopes to weigh 186 pounds.

A. Write a linear equation that represents the members weight loss goal.

B. According to the linear model, how much should the member weigh after 12 months?

Answers

A) y= -9m + 240

B) 132lb


GP4) If a person walks 2 1/2 miles in 1 1/4
hours at a constant speed, what is this
rate in miles per hour?

Answers

Answer:

Step-by-step explanation:

d = r* t

d/t = r

2.5/1.25=2 MPH

Write the vertex form of a parabola that has the same shape as the parent graph of f(x) = x^2 but with the vertex point
at (5, 4).

Answers

Answer:

            f(x) = (x - 5)² + 4

Step-by-step explanation:

Parent graph: f(x) = ax²  and vertex (h, k) means the vertex form of a parabola that has the same shape: f(x) = a(x - h)² + k  

f(x) = x²        ⇒     a = 1

vertex: (5, 4)   ⇒   h = 5,   k = 4

Vertex form of a parabola that has the same shape as the parent graph of f(x) = x^2 and the vertex (5, 4):

                                                        f(x) = (x - 5)² + 4

Which table of ordered pairs represents a proportional relationship? A 2-column table with 3 rows. Column 1 is labeled x with entries 0, 5, 10. Column 2 is labeled y with entries 10, 20, 30. A 2-column table with 3 rows. Column 1 is labeled x with entries 2, 4, 6. Column 2 is labeled y with entries 10, 20, 30. A 2-column table with 3 rows. Column 1 is labeled x with entries 1, 2, 3. Column 2 is labeled y with entries 2, 3, 4. A 2-column table with 3 rows. Column 1 is labeled x with entries 1, 3, 4. Column 2 is labeled y with entries 4, 10, 13.

Answers

Answer:

Step-by-step explanation:

Create ordered pairs and graph them. x y. (x, y). –4. 4. (–4, 4). –2. 3. (–2, 3). 0. 2. (0, 2). 2. 1. (2, 1). 4. 0. (4, 0). 10. –3 + 2y = –5. eSolutions Manual - Powered ... represents the number of children x and adults y who ... The table does not show a linear relationship since A ... download to complete the last column in the table. b.

by gurkert

Answer:

table b

Step-by-step explanation:

In the circle with center O, which arc is congruent to arc CD?

arc AB
arc AC
arc BC
arc AD

Answers

Answer: arc AD

Step-by-step explanation:

They are the same size as line CD=AD

Help! Show work please.

Answers

Answer: V = 1649.34

Step-by-step explanation:

The formula for solving the volume of a right cylinder is V = pi r^2h where r = radius and h = height.

We know that radius is half the diameter so r = 5 because the diameter is 10 ft. We already know height = 21 so our equation looks like pi x 5^2 x 21

5^2 = 5 x 5= 25

so pi x 25 x 21 = 1649.34

Answer:

V ≈ 1649.34 ft³

Step-by-step explanation:

Volume of a Cylinder: V = πr²h

Diameter = 2 · radius

Step 1: Define

d = 10 ft

h = 21 ft

Step 2: Substitute and Evaluate

10 = 2r

r = 5

V = π(5)²(21)

V = π(25)(21)

V = 525π

V ≈ 1649.34 ft³

Which number line model represents the expression 3 1/2 + (- 6)

Answers

Answer:

b

Step-by-step explanation:

it show on the graph the point 3 1/2 and the subtraction of 6 which is -2 1/2

If a figure is dilated by a factor of 6, the perimeter of the figure will change by a factor of Response area.

Answers

Answer:

1,2,3,6

Step-by-step explanation:

6x1, 2x3, 3x2, 6x1

ITS URGENTT!!! PLEASE I NEED HELP.

josh is riding a scooter. He rides 12 miles in 2 hours, 18 miles in 3, and 24 miles in 4 hours. Find the constant of proportionality and write the equation to describe the situation. Let x represent the number of hours.

Constant of proportionality is k=

the equation that describes the relationship is Y= ​

Answers

K = 6

12/ 2 = 6, 18/3 = 6, 24/4 = 6

Y = KX

Y = 6X

The input and output is shown below. What is the function?

Number of Cheese in a store | Number of Milk in a store
12 16
16 20
20 24

Answers

Answer:

Add 4.

Hope this helped! :D

Answer: Add 4

Step-by-step explanation:

12 + 4 = 16

16 + 4 = 20

20 + 4 = 24

One thing that we see in common is that we add 4.

The answer is add 4. Hope this helps!

In a class of 31 students, there are 17 females. What is the ratio of males to females in the class?

Answers

Answer:

14

Step-by-step explanation:

The ratio of males to females in the class is 14:17.

What is Ratio?

A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.

Given:

Number of students= 31

Number of females= 17

Number of males = 31- 17

                             = 14

So, ratio of males to females in the class

= 14/ 17

= 14: 17

Hence, the ratio of males to females in the class is 14:17.

Learn more about ratio here:

https://brainly.com/question/13419413

#SPJ2

How do you find the inverse of 7x^2

Answers

Hope this helps! //////

Write the following expression in exponential form: ^8√x^3

Answers

Answer:   x^(3/8)

====================================================

Explanation:

The rule we use is

[tex]\Large \sqrt[n]{x^m} = x^{m/n}[/tex]

This allows us to go from root form to exponent form, and vice versa.

The index of the root is the denominator of the fractional exponent.

In this case, m = 3 and n = 8, so,

[tex]\Large \sqrt[8]{x^3} = x^{3/8}[/tex]

Answer:

  x^(3/8)

Step-by-step explanation:

I need help with this geometry

Answers

Answer:

270°

Step-by-step explanation:

because a counter-clockwise rotation of 270° is equal to a clockwise rotation of 90°

If you find my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

Answer:

0

Step-by-step explanation:

       6

  at0     0 raised to any positive power equals 0.          

What is the slope of a line through (-4,3) and (5,3)

Answers

Answer: 0. No slope.

Step-by-step explanation: Use the slope formula (m=y2-y1/x2-x1). This would give us 3-3/5+4 resulting in 0/9. This equals 0, so there would be no slope.

24% is 120% of what number?

Answers

Answer:

Step-by-ste24 is 120% of [20]

I don't know if you meant 24 is 120% of x but if that is what you meant, then the answer would be 20. If you meant 24% is 120% of x then x=.2.

24 is 120% of 20 because 20*1.2=24

24% (AKA .24) is 120% of .2 because .2*1.2=.24 and .24=24%

Hope this helps!

#LearnWithBrainly

(8)•(-4)•(3) eqauls what ?

Answers

Answer:

-96

Step-by-step explanation:

8*(-4)*3 = -32*3 = -96

Answer:

-96

Step-by-step explanation:

8 x (-4) x 3

= 8 x 4 x (-1) x 3

= (-1) x 8 x 4 x 3

= (-1) x 96

= -96

Your teacher is giving out fruit for lunch. A paper bag contains 4 apples, 6 pears, and 8 oranges. What is the probability you will pick an orange at random? What is the complement to this event? What is the probability of the complement? Which fruit is more likely to be chosen?

Answers

Answer:

What is the probability you will pick an orange at random?   4/9

What is the complement to this event?   Pulling either an apple or a pear from the bag

What is the probability of the complement?      5/9

Which fruit is more likely to be chosen?    Orange

The probability you will pick an orange at random  is 4/9, the complement event is taking an apple or a pear out of the bag, and the probability of complement event is 5/9, and the fruit is orange.

What is probability?

It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.

We have the total number of fruits = 4+6+8 = 18

The probability you will pick an orange at random = 8/18 = 4/9

Complement of the above event: Taking an apple or a pear out of the bag

The probability of the complement

P = 1 - 4/9 = 5/9

As the probability of the choosing an orange is greater than others, so the orange is the fruit which is more likely to be chosen.

Thus, the probability you will pick an orange at random  is 4/9, the complement event is taking an apple or a pear out of the bag, and the probability of complement event is 5/9, and the fruit is orange.

Learn more about the probability here:

brainly.com/question/11234923

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Both the Math Club and the Spanish Club have a pizza party at the end of the year. The Math Club has 16 members and the sponsor gives each member one over four of a pizza at the party. The Spanish Club has 18 members and their sponsor gives each member one over three of a pizza at their party. Which statement best represents which club buys more pizzas?

Answers

Answer: Spanish Club.

Step-by-step explanation:

Not only does each person get 1/3 of a pizza (1/3 > 1/4), but there are more people.

I REALLY NEED THIS DONE FAST pleeeease someone help me only the highlighted

Answers

Answer:

2. 66

4. d/19

6. 35r+70

8. 4

10. d/16

Step-by-step explanation:

d=rt, r=d/t, t=d/r

2. r=d/t=(132)/2=66

4. t=d/r=d/19

6. d=rt=(35)(r+2)=35r+(35)(2)=35r+70

8. t=d/r=[tex]\frac{4(r+12)}{r+12} = 4[/tex]

10. r=d/t=d/16

An plumber charges $50 for a service call, plus $85
per hour of service. If he charged $390, how many
hours did he work?

Answers

If he was charged $390 he would have worked for 4 hours
390-50=340

340 divided by 85 is 4

the plumber worked 4 hours

hope this helps

1/3x-2y=7 is linear or nonlinear​

Answers

Answer: I hope this helps

Step-by-step explanation: Answer: It is linear

Basically just turn it into slope intercept form which is y=mx+b and if it doesn't have an exponent it is linear.

and also remember it is in standard form in the question which is Ax+By =C

A store has 2 separate displays of color markers. There are 16 sets of color markers in each display. There are 14 markers in each set. What is the total number of markers on display?

Answers

Answer:

The total number of markers on display is 448 markers.

Step-by-step explanation:

Given;

number of sets of color markers in each display, = 16

number of markers in each set, = 14

The number of markers in a single display = 16 x 14 = 224 markers

The total number of markers on the 2 display is = 2 x 224 markers = 448 markers.

Therefore, the total number of markers on display is 448 markers.

Answer True or False to the statements below. If the statement is False, explain why.
1. Is 2.434434443 a rational number
2. Is 6.57 an integer
3. Is 5.7 is rational
4. All fractions are rational numbers.
5 All integers are whole numbers.
6. All irrational numbers are Real numbers.
7 All negative numbers are integers.

Answers

Answer:

1:yes it is

2:no- an integer cannot have a decimal or fraction

3:yes it is

4: true

5: false- integers can be negative or positive

6: false- irrational numbers can be negative, have decimals or fractions

7: true

what is the solution for 3х + y = -5

Answers

[tex]\tt Step-by-step~explanation:[/tex]

[tex]\tt Solve~for~y:[/tex]

To solve for y, we have to move all of the terms that do not equal to y on one side, and let y be on the other side alone. Do this by subtracting 3x on both sides to cancel it out from the left side and bring it to the right.

[tex]\tt 3x-3x+y=-5-3x\\y=-5-3x\\y=-3x-5[/tex]

[tex]\tt Solve~for~x:[/tex]

To solve for x, we will do the same thing we did to solve for y: move all the terms that do not equal to x to one side, and leave x on another side of the equation. We can do this by first subtracting y from both sides.

[tex]\tt3x+y-y=-5-y\\3x=-y-5[/tex]

Then, we divide all terms by 3 to isolate the x.

[tex]\tt \frac{3x}{3}=x\\\\ \frac{-y}{3}=\frac{-y}{3} \\\\\frac{-5}{3}=\frac{-5}{3}[/tex]

[tex]\tt x=-\frac{y}{3} -\frac{5}{3}[/tex]

[tex]\lare\boxed{\tt Our~final~answer:~y=-3x=5,~x=-\frac{y}{3}-\frac{5}{3} }[/tex]

It's in your genes: Human genetic material (DNA) is made up of sequences of the molecules adenosine (A), guanine (G), cytosine (C), and thymine (T), which are called bases. A codon is a sequence of three bases. Replications are allowed, so AAA, CGC, and so forth are codons. Codons are important because each codon causes a different protein to be created (a) how many different codons (b) how many different codons are there in which all three bases are different (c) the bases A and G are called purines, while C and T are called pyrimidines. How many different codons are there in which the first base is a purine and the second and third are pyrimidines?

Answers

Answer:

a. 64

b. 24

c. 16

d. 6/16

e. 1/8

Explanation:

a. How many different codones are there?

Answer: there are 64 different codons

b. How many different codons are there in which all three bases are different?

Answer:there are 24 different codons in which all three bases are different

c. The base A and G are called purines, while C and T are called pyrimidines. How many different codons are there in which first base is purines and second base is pyrimidines

Answer: there are 16 different codons where the which first base is purines and second base is pyrimidines

d. What is the probability that all three bases are different?

Answer: probability of all three bases being different is

Number of codons with three different bases / total number of codons

= 24/64 = 6/16

e. What is the probability that first base is purines and second and third base is pyrimidines?

Answer: prob is number of codons with first base being purine and second and third base being pyrimidines / total number of codons

= 8/64 = 1/8

help ??? i need the answer

Answers

Answer:

41

Step-by-step explanation:

please help me out. my guess is that is (-infinity, infinity) but this is my last chance and i dont want to get it wrong. please help a girl out.

Answers

Answer:

You are correct!!

It would be (-infinity, infinity) :)

Ms. Smith bought 30 boxes of pencils in the beginning of the year. Each box cost $2.15 including tax. 6/15 of the boxes she bought have been used. How much money did she spend on the remaining boxes?

Answers

Answer:

$45

Step-by-step explanation:

In order to begin solving this problem, we need to first calculate the number of remaining (unused) boxes. We do this by multiplying the total number of boxes by the percentage of boxes remaining. Since Mr. Smith used 6/15 of the boxes we know that there are 9/15 remaining (15-6 = 9). If we divide 9 by 15 we get 0.60 which is the percentage of remaining boxes in decimal form. Now we simply multiply this by the total initial number of boxes

30 * 0.60 = 18 remaining boxes

Now that we know how many unused boxes there are, we simply multiply this number by the cost of each box.

18 * $2.15 = $45

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