If an object was dropped from a height of 405 Meters,find the time it took for the object to hit the ground​

Answers

Answer 1

Answer:You can use the concept of conservation of total mechanical energy (neglecting the air resistance).

So, initially total mechanical energy = gravitational potential energy (kinetic energy is zero because initially there is no velocity).

Final total mechanical energy = kinetic energy (gravitational potential energy is zero because height has become zero).

So, initial mechanical energy = Final mechanical energy

(1/2)mv²=mgh

Step-by-step explanation:


Related Questions

how do you find the x and y intercepts from a table

Answers

The first step is to find the slope which is (y2-y1)/(x2-x1) and you can use any of these points. Next write the equation is point slope form which is y-y1=m(x-x1) using the slope and one of the points. Then you can simplify to write this is slope-intercept form and solve the x and y intercepts as given.

Carlos vendio su carro por unprecio en el cual perdia el 12% de 22000000¿en cuanto lo habia comprado

Answers

carlos vendio su carro por un precio en el cual perdia 12% del precio en que lo compro.si lo vendio a un precio de $22.000.000. en cuanto lo habria comprado

Responder:

$ 24640000

Explicación paso a paso:

Pérdida en venta = 12%

Monto de venta = $ 22,000,000

Dejar ; Importe de la compra = x

Monto de la compra :

(1 + porcentaje de pérdida) * monto de venta

(1 + 12%) * 22.000.000

(1 + 0,12) * 22 000 000

1,12 * 22 000 000

= 24640000

A bus drives for 3 1/2 hours at an average speed of 56mph.
How far does the bus drive?

Answers

Answer:

196 km

Step-by-step explanation:

Distance = speed x time

So to work it out, it would be 3.5 x 56

= 196km

Answer:

A bus drives for 3 1/2 hours at an average speed of 56mph.

To Find :

How far does the bus drive?

Step-by-step explanation:

Times of journey(T)=3 1/2 =7/2hours

Average speed of bus(v)=56mph

We know the formula:

Average speed (v)=total distance (d)/Time(T)

So:

Total distance (d)=qverage speed(v)×time(t)

Total distance (d)=56×7/2

Total distance(d)=28×7=196 miles

It means distance travel by bus is 196 miles.

I hope it's helpful!

What is the answer to - (2 - 7x) if you simplify

Answers

Answer:

It would be

-2+7x

Step-by-step explanation:

James has 13.7 ounces of trail mix. He shares the trail mix equally with his sister.

How much trail mix does each person get?

Answers

Answer:

6.85 ounces

Step-by-step explanation:

13.7/2people=6.85

please help me with this problem been stuck on it for about 15 mins and getting stressed out ​

Answers

Step-by-step explanation:

[tex]given \: \\ ({a}^{5} )^{5} \\ = {a}^{5 \times 5} \\ = {a}^{25} \\ hope \: it \: will \: help[/tex]

What is the range of the function represented by the graph?

On a coordinate plane, points are at (0, 1), (1, 2), (2, 3), (3, 4).
{0, 1, 2, 3}
{1, 2, 3, 4}
1 less-than-or-equal-to y less-than-or-equal-to 4
0 less-than-or-equal-to x less-than-or-equal-to 3

Answers

Answer:

{1,2,3,4}

Step-by-step explanation:

cant be zero, also got it right on edge 2020

Answer:

{1,2,3,4}

Step-by-step explanation:

Raul is flying a kite with an angle of elevation equal to 60° if the height of the kite is 300 feet then now long is the kite string.

Answers

Answer:

ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Step-by-step explanation:

its d

Write the English phrase as an algebraic expression. Then, simplify the expression. Let x represent the number.

The difference between the product of five and a number and three times the number

What is the algebraic expression?

Answers

Answer:

5x-3x = 2x

Step-by-step explanation:

"The difference" = the substraction of two numbers

(something) - (something)

"The difference between the product of five and a number"

By product means multiplication. So, the multiplication of five and a number. Before, you have been told to represent the number with "x", and thats what you will do now.

(5*x) =  (5x)

(5x) - (something)

"The difference between the product of five and a number and three times the number"

With three times the number, we mean the same letter "x" & three times will be the amount of times we will multiply it. So, by the end we will have:

(5x)-(3x)

Now we just rest them

5x-3x= 2x

Hope it was helpful ;)

The difference between the product of five and a number and three times the number will be two times the number and algebraic expression will be 5x - 3x = 2x.

What is an expression?

An expression is a combination of some mathematical symbol such that arithmetic operator and variable such that all are constrained and create an equation.

In other meaning, expression is very useful to determine the end or root value of constraint.

For example 3x +5y

The constraint of expression is represented as = or <, >.

Given that,

x is that number,

Five times the number = 5x

Three times the number = 3x

Now,

Difference ⇒ 5x - 3x = 2x

Hence "The algebraic expression is  5x - 3x = 2x and The difference between the product of five and a number and three times the number will be two times the number".

To learn more about expression,

https://brainly.com/question/14083225

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A flagpole that is 32 feet tall casts a 67-foot shadow. What is the angle, marked with an x on the diagram, that the sun hits the flagpole? Round to the nearest degree, and enter the number only.

Answers

Answer:

64

Step-by-step explanation:

what is the exact decimal equivalent of 7/16 SHOW YOUR WORK
1.473
0,4375
4.375
4.374

Answers

oh this is pretty simple if u look at it. it’s 0.4375, because the fraction isn’t complete meaning that it is less than 1

Analyze the diagram below and complete the instructions that follow name to read lines in the diagram and appear to be SKEw

Answers

Answer:

the answer i think is ba and cb

7-4[3-(4y-5)]
distributive property

Answers

Answer: =16y−25

Step-by-step explanation:

Distribute:

=7+(−4)(3)+(−4)(−4y)+(−4)(5)

=7+−12+16y+−20

Combine Like Terms:

=7+−12+16y+−20

=(16y)+(7+−12+−20)

=16y+−25

Hope this will help you

I just need to make sure my answer is correct :)

Answers

Answer:

Its positive

Step-by-step explanation:

3x - 5 = -3

3x = 2

x = 2/3

2/3 is positive

What is an expression equivalent to 6 - 4(3 - 6m) + 12m that is the product of two factors.​

Answers

Answer:

36m-6

If im wrong im sorry

How is the graph of y = - 4x2 – 5 different from the graph of y = -4x2?
A. It is shifted 5 unit(s) down.
C. It is shifted 5 unit(s) up.
B. It is shifted 5 unit(s) left.
D. It is shifted 5 unit(s) right.

Answers

Answer:

C. It is shifted 5 unit(s) up.

Step-by-step explanation:

The y-intercept of the first equation is –5. The y-intercept of the second equation is 0. This means that it moves up by 5 units.

Look at the image below for better understanding:

Find, to the nearest foot, the length of the diagonal of a square whose side is 10 feet.
Draw a square to help solve the problem. (Remember to round answer to the nearest
foot, no decimals)

Answers

the length of the diagonal is 14 feet


Sarah has $25 to spend at the grocery store. She spends $18.77. How
much money does Sarah have left?

Answers

Sarah will have $6.23 left. This is so because 25 - 18.77 = 6.23. Hope this helps.

Answer:

x=$75

Step-by-step explanation:

2. Noah said, "I think this line is a good fit because it passes through the leftmost point and the rightmost point." Do
you agree?

Answers

Answer:

No I do not because I think the dots on each side are not equally split so it’s not a good fit

Step-by-step explanation:

twice a number x, minus 17

Answers

Answer:

2x - 7

Step-by-step explanation:

Twice a number x means x times 2, which can be written as 2x

Minus 17 from 2x

What are the coordinates of the point in the directed line segment from (-2,-8) to (5,-1) that partitions the segment into the ratio of 1 to 6?

Answers

Answer:

The coordinates of the point P  in the directed line segment from (-2,-8) to (5,-1) that partitions the segment into the ratio of 1 to 6 will be:

(x, y) = (-1, -7)

Step-by-step explanation:

Let P be the point.

As the point P is in the directed line segment from (-2,-8) to (5,-1) into the ratio of 1 to 6

i.e.

(x₁, y₁) = (-2,-8)

(x₂, y₂) = (5,-1)

Rise = y₂ - y₁ = -1 - (-8) = -1 + 8 = 7

Run = x₂ - x₁ = 5 - (-2) = 5 + 2 = 7

1 : 6 ratio means the point P lies at

[tex]\frac{1}{6+1}=\frac{1}{7}=14\%[/tex]

Thus,

rise for P = 7 × 14% = 1

run for P =  7 × 14% = 1

Thus, coordinates of P will be:

x = -2 + 1 = -1

y = -8 + 1 = -7

Thus,

The coordinates of the point P  in the directed line segment from (-2,-8) to (5,-1) that partitions the segment into the ratio of 1 to 6 will be:

(x, y) = (-1, -7)

Apply the algorithm for dividing fractions. of 3/4 divided 1/5

Answers

Answer:

15/4

Step-by-step explanation:

Keep,Change, Flip

Answer:

15/4

Step-by-step explanation:

(3/4) / (1/5) = 3/4 * 5/1 = 3*5 / 4*1 = 15 / 4

Which of the following are equivalent to 80 1/2

Answers

Answer:

Sorry but what are the answer choices?

If anything just divide or multiply 80 1/2 by any number and it will give you something equivilent

Step-by-step explanation:

2√20 is the equivalent expression of the value  [tex]80^\frac{1}{2}[/tex].

What is Number system?

A number system is defined as a system of writing to express numbers.

The given expression is [tex]80^\frac{1}{2}[/tex]

We have to find the equivalent expression of  [tex]80^\frac{1}{2}[/tex]

[tex]80^\frac{1}{2}[/tex] can be written in radical form which is √80

80 can be written as 4 times of 20

√4×20

The square root of 4 is 2

So 2√20

Hence, 2√20 is the equivalent expression of the value  [tex]80^\frac{1}{2}[/tex].

To learn more on Number system click:

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Which of the following could be the equation of the graph shown below?
Check all that apply.
A. y = -4x+ 2
B. 3x + 2y = 6
c. 2x - y = 7
OD y = 5

Answers

Answer:

A. y = -4x + 2  and  B. 2x + 2y = 6      

Step-by-step explanation:

A. y = -4x + 2        This is correct since the displayed picture shows a negative slope. Therefore, m is negative

B. 2x + 2y = 6       This is converted to     y = -x +3   So, it is also correct

C.  2x - y = 7           This is converted to y = 2x-7      So, it is not correct

D. y = 5                   Y value would have to always be at 5  So, it is not correct

(BRAINLIESTTTTT PLS ANSWERRRR DUE IN 5 MINS!!!!) Michelle and Cameron are selling popcorn for a school fundraiser. Michelle sold 10tins of cheese popcorn and 8tins of caramel popcorn for a total of $446. Cameron sold 22tinsof cheese popcorn and 11tins of caramel popcorn for a total of $803. Write a system of equations to determine the cost one tin of cheese popcorn and one tin of caramel popcorn. Show all your work.

Answers

one tin of cheese 20$ and one tin of Carmel 27$

❗️HELP ASAP❗️
Which pair of angles is congruent??
F. 21 and 22
G. 21 and 24
H. 24 and 23
I. 24 and 22

Answers

I think the answer is G.

I think this because of the fact families (like my elementary teacher used to say)
It’s like about multiplication of fact families so make it where it would have fact families with those numbers as the sums.
I hope this helps! Be safe out there.

pls help! 16 points:)


Answers

Answer: 52 degrees

Step-by-step explanation:

most likley like if correct

The correct answer is 52 degrees

question 5. need asap please and thank you

Answers

Answer:

I believe changing -3/4 steepen the slope. For example, y=-1x+2

Classify the following triangle. Check all that apply.
I A. Obtuse
B. Acute
C. Scalene
D.slught
E. Isosceles
F. Equilateral

Answers

Answer: B. Acute and F. Equilateral

Step-by-step explanation: Acute triangles contain interior angles that are less than 90 degrees. All triangles must have interior angles that add to 180 degrees when combined. In this triangle, all interior angles are equal. Therefore, we can divide 180 by the 3 angles to find that each angle is 45 degrees. 45 degrees is less than 90, so it is an Acute Triangle.

In equilateral triangles, all sides have the same length. We can see in the diagram that all of the sides contain the same marking, indicating they are the same length. So, the triangle is also equilateral.

Hope this helps!

− 8/7 +(−1/2) reduced to simplest form

Answers

Answer:

simplified would be -23/14 if you wanted to answer this it would be either -1 9/14 or -1.64

Step-by-step explanation:

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