What is the speed (approximately) of a 2.5-kilogram mass after it has fallen freely from rest through a distance of 12 meters?

Answers

Answer 1

Answer:

15.3 m/s

Step-by-step explanation:1) Find the gravitational potential energy using the equation :

     [tex]PE_g=mgh[/tex]

    [tex]PE_g=2.5(12)(9.8)\\PE_g=294[/tex]

2) Then use the equation for kinetic energy to solve for the velocity:

     [tex]KE=\frac{1}{2} mv^{2}[/tex]

     [tex]294=\frac{1}{2}(2.5)(v^2)\\235.2=v^2\\\sqrt{235.2} =v\\15.3 m/s=v[/tex]


Related Questions

Can you help me, please?​

Answers

Answer:

a. 18

b.144

c.108

Step-by-step explanation:

Using the given, Angle R equal 5x-54 and Angle T is 8u.

Also RS is congruent to ST. Since SR is congruent to ST, their opposite angles are also congruent using base angle theorem. So angle R is equal to Angle T. However, STU is a exterior angle so STU isn't congruent to SRT.

However, we can add , interior angle T, and STU to 180 to find x.

Interior angle T=SRT so interior angle t=5x-54.

Set up equation

[tex]5x - 54 + 8x = 180[/tex]

[tex]13x - 54 = 180[/tex]

[tex]13x = 234[/tex]

[tex]x = 18[/tex]

b.Plug 18 into 8x

[tex]8(18) = 144[/tex]

STU=144

c. Using the triangle exterior angle theorem, the exterior angle is equal to the measure of the sum of two non adjacent angles.

Angle S and Angle R are the non adjacent angle to STU.

So we cast up this equation.

[tex]5x - 54 + s = 180[/tex]

plug 18 in for x

[tex]5(18) - 54 + s = 144[/tex]

[tex]90 - 54 + s = 144[/tex]

[tex]36 + s = 144[/tex]

s=108

What is 19% as a decimal and a fraction?

Answers

Answer:

Decimal - 0.19 Fraction - 19/100

Step-by-step explanation:

Answer:

Decimal: 0.19

Fraction: 19/100

Step-by-step explanation:

19% means that there is 19/100 which is also 0.19 as a decimal. I dont really know how to explain this but can you please mark as brainliest?

Consider the sequence 1, –3, 9, –27, 81, … Which statement describes the sequence?
The sequence diverges.
The sequence converges to 0.
The sequence converges to 1.
The sequence converges to ∞.

Answers

Answer:

There is a similar problem with the same numbers except with no negatives so it goes 1 , 3 , 9 , 27, 81 for this question the answer is that it diverges.

Step-by-step explanation:

It was on the unit test review for edge and the answer was that it diverges.

This is about  understanding the behavior limits of sequence.

The sequence diverges.

The given sequence is;

1, –3, 9, –27, 81,...

Now, from the sequence above, we can see that each number is multiplied by -3 to get the next one in the sequence.

From mathematical definition, A divergent sequence is one in which the values are approaching an infinite value which could either be positive or negative whereas if it is a convergent sequence it will be approaching 0.

In this sequence given, we can see that the values are increasing to either positive or negative and as such it will keep changing till an infinite positive or negative value which corresponds with the definition of a divergent sequence as earlier defined.

• Thus, the sequence is a divergent one.

Read more at;

brainly.com/question/23452908

Put the following equation of a line into slope-intercept form, simplifying all fractions.

Answers

Answer:

y=1/2x-2

Step-by-step explanation:

2y=-4+x

2y=x-4 divide both sides by 2

y=1/2x-4/2

y=1/2x-2

Answer:

[tex]y = 0.5x - 2[/tex]

Step-by-step explanation:

Slope intercept form is

[tex]y = mx + b[/tex]

Our initial goal is to isolate y.

[tex]2y - x = -4[/tex]

Add x to both sides of the equation.

[tex](2y - x) + x = (-4) + x[/tex]

Simplify.

[tex]2y =x -4[/tex]

Divide both sides by 2.

[tex]\frac{2y }{2} = \frac{(x - 4)}2}[/tex]

Simplify.

[tex]y = 0.5x - 2[/tex]

I'm having trouble solving the system of linear equations. This is the system: 5x + 6y = 50 x - 6y = -26 Can you please help me? Don't give the answer, but can you just explain?

Answers

Answer:

y = 5 ; x = 4

Step-by-step explanation:

Given :

5x + 6y = 50 - - - (1)

x - 6y = -26 - - - (2)

From (2)

x = - 26 + 6y

Put - 26 + 6y for x in (1)

5(-26 + 6y) + 6y = 50

-130 + 30y + 6y = 50

-130 + 36y = 50

-130 - 50 = - 36y

-180 = - 36y

y = 180 / 36

y = 5

Put y =5 in x = - 26 + 6y

x = - 26 + 6(5)

x = - 26 + 30

x = 4

y = 5 ; x = 4

n the diagram below, k· l AC intersects nBDE at B. Choose Tr u e or False for each statement.

Answers

True false true cause look it up and you will figure it out

What is the eighth term of the geometric sequence 6, 18, 54

Answers

Answer:

= 4374.

Step-by-step explanation:

 it is important to understand the pattern hidden in such problem.Let’s give it a try 2, 6, 18, 54 and so on.It can be written as 2, 3*2, 9*2, 27*2 and so on.

This can be further written as2 (1, 3, 9, 27, and so on) as 2 is common in every term.Now if you see the chain 1,3,9, 27 and so….you will see a pattern hidden i.e. 3=1*3 ,9=1*3*3, 27=1*3*3*3 now 27 is the 4th term consist of three 3. So 8th term would consist of seven 3. 8th would be 8th term = 1*3*3*3*3*3*3*3 = 2187 Hence the 8th term for the series 2,6,18,54 would be= 2*2187 = 4374.

PLS ANSWER PLSSSS. THERES AN ATTACHMENT.

Answers

Answer:

40

Step-by-step explanation:

8a2 = 12 + a plzzzzzzzzzzzzzzzzzzzzzzzzzz help me slove this problem

Answers

Answer:

1.28

Step-by-step explanation:

Assuming in 8a2 the '2' represents an exponent, you answer should be

1.28

please help, I have so much work to do, and I have to fit in time to study for a huge test they will determine my future
fill in the 5 blanks​

Answers

Answer:

11

13

15

23

Step-by-step explanation:

you substitute each x value in the table with the x in the equation

f(x)= 2x+13

f(x)= 2(-1)+13 .... repeat for each

11

13

15

17

20

In order from the top

Kenny wants to wrap his mom's present. Wrapping paper is three cents per square inch. How much will the wrapping paper cost Kenny?

Answers

Answer:

There is no answer because we dont know how many square inches his moms present is.

Fill in the blanks and explain the pattern.
1, 4, 9, 16, 25, ___, ___, ___, ___, 100​

Answers

Answer:

36, 49, 64, 81

Step-by-step explanation:

The pattern goes up in odd numbers (+3, +5, +7 ...)

Factorise 12-8x
How would u find it out

Answers

Answer:

8x+12

Simplifying

8x + 12

Reorder the terms:

12 + 8x

Factor out the Greatest Common Factor (GCF), '4'.

4(3 + 2x)

Final result:

4(3 + 2x)

HOPE IT HELPED YOU

pleaseeee help me!!! DUE IN 15 MIN​

Answers

Answer:

∠Y = 55°

Step-by-step explanation:

Since triangle ABC and XYZ are congruent, that means that...

∠A = ∠X

∠B = ∠Y

∠C = ∠Z

Since ∠Y = ∠B and ∠B = 55°, that means ∠Y = 55°.

A 30 foot ladder is leaning against the side of a building and is positioned such that the base of the ladder is 21 feet from the base of the building how far above the ground is the point where the ladder touches the building

Answers

Answer:

21.42ft

Step-by-step explanation:

a²+b²=c² where "c" is the hypotenuse of a right triangle and "a" and "b" are the two other sides

now let's plug in the values

21²+b²=30²

b²= 30² - 21²

b²= 459

b= 21.42

PLEASE HELPPPP I'LLL GIVE BRAINLISTS

Answers

Answer: A

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

For one scientific notation will not work with negative exponents therefore we can eliminate answer choices A and D

Secondly scientific notation usually has a decimal

Answer choice c does not have a decimal point leaving us with answer choice B


An account earns simple interest. (a) Find the interest earned. (b) Find the
balance of the account.
750 at 8% for 2 years

Answers

Answer:Simple interest is money earned on a savings account or an investment. ... 45. Multiply. The interest earned is $45 after 3 years. b. To find the balance, add the interest to ... 2. You put $1000 in an account. The account earns $100 simple interest ... of $10,000 to earn $750 interest? ... interest earned on $200 after 8 months.

Step-by-step explanation:

WILL GIVE BRAINLIEST!
Use the formula N = t2 − t/2, where N is the number of basketball games that must be scheduled in a league with t teams if each team is to play every other team once.
A league has 45 games scheduled. How many teams are in the league if each team plays every other team once?
teams

Answers

Answer:

t=7

Step-by-step explanation:

N=45

find t

45=t^2-t/2

0=t^2-t/2-45

use the quadratic formula

t=6.96~=7

Answer:

Step-by-step explanation:

45 = t2 - t/2

45 = 30(2) - 30/2

45 = 60 - 15

45=45

I REALLY NEED HELP WITH THIS QUESTION

Answers

Answer:

d i have done this before

Step-by-step explanation:

Answer:

It is B

Step-by-step explanation:

If im wrong sorry but i got big brain :0

Mathhh- PLEASE ANSWER

Answers

Answer:

d)

Step-by-step explanation:

turn 9x + y = 8 to slope intercept form

9x + y = 8

-9x         -9x

y = -9x + 8

m = -9

y intercept = 8

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

Help meee pleaseeeeeeeeee

Answers

Answer:

3. 25

4. 22

5. 14

6. 12

7. 45

Step-by-step explanation:

12x4=40+8

20-12=2x4

25-4=3x7

4x9=31+5

16+12=7x4

38-5=3x11

6x7=46-4

Find the length




*Will give brainlist

*Comment if i didn't describe enough

*STEP BY STEP

Answers

Answer: 60 because the formula is base times highet devided by 2 or 1/2, hope this helps

Emily goes to the gym every 4 days. Scott goes to the gym every 14 days. Emily and Scott both go to the gym today. How many days will it be before they next go to the gym on the same day

Answers

Step-by-step explanation:

28 days. it'll be Emily's 7th visit and Scotts 2nd.

28 is the lowest common factor


Are the two triangles similar? Why or why not?
PLZZZZZ HELP

Answers

Answer:Yes, they are similar.

If two triangles are congruent then all corresponding sides as well as corresponding angles of one triangle are equal to those of other triangles. This can happen in four cases

Step-by-step explanation:

Answer:

yes the are similar

Step-by-step explanation:

they are similar since they both have a 90⁰ angles and the lines are =. but I don't know if they count the size of the triangle if yes then they are not similar since they do not have the same area

(2x+2)(3x+1) Multiply the binomials
Please show Step-by-Step

Answers

Answer:

2(x+1)(3x+1)

Step-by-step explanation:

(2x+2)(3x+1)

Apply the distributive property by multiplying each term of 2x+2 by each term of 3x+1.

6x^2+2x+6x+2

Combine 2x and 6x to get 8x.

6x^2+8x+2

Answer:

6x²+8x+2

Step-by-step explanation:

multiply each ferm in the first set of parenthess by each term in the second parentheses (FOIL)

2x times 3x +2x+ 2x times 3x+2

6x+2x+2 times 3x +2

6x²+2x+6x+2

now collect like terms

6x²+8x+2

Please answer quickly!!!
Need help


Answers

Answer:

A- the graph of f(x) is shifted 7 units down

Step-by-step explanation:

Will someone make me

Two one-step equations
Two equations that contains fractions
One equation with distributive property
One equation with decimals
One real-world problem that is solved by an equation

Plzzzzzz it is due at 8:00 tonight

Answers

Answer:

x+5=12

x+7=15

x+ 1/2=1

x+1/3=1

4(x+1)= 8

1.5+x=3

Olivia is 5 years older than Nicole. The sum of their ages is 35. How old is each girl?

Step-by-step explanation:

how this helps!

Simplify -5(4x-3) please help?

Answers

Answer:

-20x+15

Step-by-step explanation:

You use foil method so you distribute it and it becomes -5*4x amd -5*-3 so it would be -20x+15

-5 x 4x=-20x and -5x x -3 = +15

-20x+15 is the answer

math - select all that apply

Answers

Answer:

a

Step-by-step explanation:

both the end points are around the same number

A cereal brand is on sale $2 for 32 oz. If Sally spent $8 on the cereal, how many ounces did she purchase?

Answers

Answer:

it would be 128 because 8 divded 2 is 4. 4 is the number of cereal boxes now multiply 4 x32 which would be 128

Answer:
128 ounces
Explanation:
If she spends $8 than that means you multiple 2•4 and that gets you $8 so now you have to multiple 32 by the same number we multipled 2 by which is 4 so 32•4 = 128
Hope this helps! Have a great day
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