calculate the time taken for a train to travel 1000m if its initial is 3 m/s and it is moving at a constant acceleration of 0.1m/s^2

Answers

Answer 1

Answer:

Step-by-step explanation:

For obects already in motion, the distance travelled, s, is:

s = vi*t + (1/2)at^2

where vi is the initial velocity, a is the acceleration, and t is the time in seconds.

We want the time, t, to reach 1000 meters.

1000 m = (3 m/s)*t + (1/2)*(0.1m/s^2)*(t^2)

(1/2)*(0.1m/s^2)*(t^2) = 0.05t^2

0.05t^2 + 3t -1000 = 0

Solve quadratic equation:

t = 114.6 seconds


Related Questions

Does anyone else have people like these comments this ? I can’t report them either

Answers

Answer:

yes and i hate it, you cant report some of them cause they get deleted automatically.

Step-by-step explanation:

I hate those there so useless

Solve for x
See picture for problem! Please and thank you!!

Answers

Answer:

x = 10°

Step-by-step explanation:

m∠DCR is an exterior angle of the triangle DCE

Solving For Exterior Angles:

To find the value of an exterior angle, we must sum up the two opposite (corresponding) angles inside the triangle

In this case, 2x + 7 and 26 are the corresponding angles

Solve:

6x - 7 = 2x + 7 + 26

4x - 7 = 7 + 26

4x = 14 + 26

4x = 40

x = 10°

Your answer : x = 10°

-Chetan K

Solve 5x + 2 = 22
Solve 2x-5=7
Solve 2x+5=12

Answers

Answer:

x = 4

x = 6

x = 7/2

Step-by-step explanation:

Solve 5x + 2 = 22:

5x+2-2=22-2 (subtract 2 from both sides)

5x=20

x=4

Solve 2x-5=7

2x-5+5=7+5 (add 5 to both sides)

2x=12

x=6

Solve 2x+5=12

2x+5-5=12-5 (subtract 5 from both sides)

2x=7

x= 7/2

Solve 5x + 2 = 22

=> 5x + 2 = 22

=> 5x = 22 – 2

=> 5x = 20

=> x = 20/5

=> x = 4

Solve 2x-5=7

=> 2x - 5 = 7

=> 2x = 7+5

=> 2x = 12

=> x = 12/2

=> x = 6

Solve 2x+5=12

=> 2x + 5 = 12

=> 2x = 12-5

=> 2x = 7

=> x = 7/2

15
2) The bakers at Healthy Bakery can make 220 bagels in 2 hours. How many
bagels can they bake in 19 hours? What was that rate per hour?
???

Answers

2090

Step-by-step explanation:

220 divided by 2 hours is 110 per hour

19 times 110 equals 2090

Where is the velocity positive?
х
C D
E
B
А
F G
A. B-E
B. C-D
C. A-C
D. B & E

Answers

Answer:

A-C

Step-by-step explanation:

Positive velocity means the graph is going up. Hope it helps!

#HaveAnAmazingDay

[tex]GraceRosalia[/tex]

a³-a²b-ab²+b³hihihihihihihi

Answers

Refer to the attachment
a³ + b³ = (a + b)(a² – ab + b²)

Please help me, I will be so thankful ​

Answers

Answer:

Step-by-step explanation:

g(-4) = 4   ,  x < -2

g(-2) = (x - 1)²     ; -2≤x< 1

        = (-2-1)²

         = (-3)²

g(-2) = 9

g(0) = (x -1)²      ;  -2 ≤ x < 1

      = (0 -1)²

       = (-1)²

       = 1

10. If you can travel 97 miles in 30 minutes, how many mileScan you
travel at the same rate in 8 hours?

Answers

Answer: 1,552
Explanation: you want to set up a proportion

Ex:

97 X
—- x —
30. 480

The way I got 480 was I converted 8 hours into minutes because you want the same value of measurement.

After this, just cross multiply and you get the equation

46560 = 30mile

Then just isolate the miles (because you are trying to solve for 1 mile

Miles = 1,552
1,552

30 minutes is half of an hour so first you need to multiple 8•2 then you multiple 97 by what 8•2 is (16) that gets you 1552

the quotient of 8 and y

Answers

Answer:

"The quotient of 8 and y" is written as the following algebraic expression:

8÷y

A certain monthly magazine has both print and online subscribers. Print subscribers are people who pay to have the magazine physically delivered to them each month. Online subscribers are people who pay to have access to the electronic version of the magazine. The editors of the magazine want to study how online subscribers feel about the design of the electronic version, and they will gather data from a sample. Which of the following is a sample of the population of interest?

a. 50 subscribers to the magazine
b. 50 print subscribers
c. 50 online subscribers
d. 50 people who buy a copy of the magazine at a newsstand
e. 50 people who find an article in the magazine while searching online

Answers

The sample population of interest is 50 online subscribers.

Sample population of interest is said to be the total number of people one is considering for a particular study. In this question, online subscribers. This means the total people being considered for making the particular study.

to learn more, visit https://brainly.com/question/16720016

HELP HELP WILL MARK BRAINLIEST

Answers

Answer:

b. 10a³ - 11a - 3

Step-by-step explanation:

1. Expand 3(a³ - 2a - 5)

= 3a³ - 6a - 15

2. Add 7a³ - 5a + 12 and 3a³ - 6a - 15

7a³ + 3a³ = 10a³

-5a + -6a = -11a

12 + -15 = -3

3. Answer: b. 10a³ - 11a - 3


Brent went for a bicycle ride. The clocks show his start time and his
end time. How long did Brent ride his bicycle?

Answers

Answer:

He rode his bicycle for 40minutes

Hope it helps:)

answer: 40 minutes!!

Bob spent x amount on food. Bill spent x+20, and John spent 3x-2. If bill and John spent the same amount of money, how much dud bob spend?​

Answers

[tex]\\ \sf\longmapsto x+20=3x-2[/tex]

[tex]\\ \sf\longmapsto 3x-x=20+2[/tex]

[tex]\\ \sf\longmapsto 2x=20[/tex]

[tex]\\ \sf\longmapsto x=10[/tex]

Bob spent 10$

step by step explanation of
((3^-1)^-2 -2^3)^-1​

Answers

Answer:

SEARCH MO PARA MALAMAN MO HEHE

Can someone please help me with this question.

Thank you.​

Answers

Answer:

okay so..

Given

<2 = 110°

• <2 = <4 so <4 = 110°

Step-by-step explanation:

Solution

• <4 is equal with it's front facing angle(the angle next to <1) let's call that angle <x

<4 = <x = 110°

<x + <1 = 180°

110° + <1 = 180°

<1 = 180° - 110°

<1 = 70°

• <4 + <3 = 180°

110° + <3 = 180°

<3 = 180° - 110°

<3 = 70°

The velocity of a moving body is given by the equation V = 12t – 6t2. For what
value of t is the velocity greatest?

Answers

Answer:

greatest velocity 6

Step-by-step explanation:

v=12t-6t2

dv/dt=0

12-12t=0

t=1

v at t=1=12-6=6

geometry hw!!! picture is above

Answers

X=12 because 73-3x=61-2x so add 3x to both to make 73=61+X then subtract 61 from both to get 12=X

What is the slope of the line that passes through the points (8, -4) and (6, 2) ? Write your answer in simplest form.

Answers

Answer:

m=-3

Step-by-step explanation:

I just used the slope formula. Hope this helps! Also, I'm certain this is correct.

JJ withdraws $20 from his bank account every week for lunch. Suppose he does not make any additional deposits or withdrawals. What integer represents the change in value of JJ's bank account after nine weeks?

Answers

Answer:

-118

Step-by-step explanation:

Since he is withdrawing, the value of 20 will be negative.

And if he is withdrawing $20 over nine weeks, then it is a multiplication problem.

So,

-20 x 9 = -118

1. What percent of 56 is 14?

Answers

Answer:

25

Step-by-step explanation:

14 ÷ 56 × 100

(9 x 10⁶)(8 x 10⁻⁴)= ?

Answers

Answer: 7.2x10 3

Step-by-step explanation:

Answer: 7.2 x 10^3 or 7200

Step-by-step explanation:

add the expression (1/4x - 4 + 2y) + (2/5x + 5 - 4y)

Answers

Answer:

=  13/ 20 x  −  2y+1

Here's your answer, I hope you enjoy.

plz help my grade went down

Answers

Answer:

Slope = -4

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes, which means that multiplying their slopes result in a product of -1. Given the equation, x - 4y = - 12:

Transform the equation into its slope-intercept form, y = mx + b:

x - 4y  = - 12

x - x - 4y = - x - 12

-4y = -x - 12

Divide both sides by -4:

[tex]\frac{-4y}{-4} = \frac{-x - 12}{-4}[/tex]

y =  ¼x + 3  ⇒ (This is the slope-intercept form of the given standard equation, x - 4y  = - 12).

Since the slope of the given equation is ¼, then it means that its negative reciprocal must be - 4:

(¼) (-4) = -1

Therefore, the slope of the line perpendicular to x - 4y = - 12 is - 4.

it’s 1/4 because if you apply the formula you just get that so m=1/4

What is the solution to the equation? ^5 /x+ 7= -2

Answers

Answer:

x=19/2

Step-by-step explanation:

5/x+7=-2

5=-2(x+7)

5=-2x-14

5+14=-2x

19=-2x

Therefore

2x=-19

x=19/2

Choose the algebraic expression that matches the phrase below.
h increased by 5​

Answers

Answer:

h + 5

Step-by-step explanation:

increased = add so yeah...

If women always married men who were 2 years older
than themselves, what would the correlation between the ages
of husband and wife be?
(a) 2
(b) 1
(c) 0.5
(d) 0
(e) Can't tell without seeing the data

Answers

it’s b dkdkdkekdkdlkdkke

Answer:

If you were to create a scatterplot using sample ages such as : (30,32),(33,35),(47,49), etc. You will begin to see a perfect linear relationship, which would mean the correct correlation is 1.

(hope it helps! <3)

The GCF of two numbers is 3 and the LCM is 180. If the one of the number is 45, what is the other number?

Answers

Answer:

45

Step-by-step explanation:

45 = 3*3*5

180 = 2*2*3*3*5 <---- so the other number had to contain a factor of 2*2 or 4

also, let the other number has to be of the form 3k and it must contain a factor of 4, how about 12 ?

check: lcf of 12 and 45 is 3,

the lcm of 12 and 45 is ...

12 = 2*2*3

45 = 3*3*5

so we need: 2*2*3*3*5 = 180

Miss Weight's recipe for Soup calls for
1 1/4 teaspoons of salt. She wants to
use 1/2
that amount. How much salt
Will she use?

Answers

Answer: 5/8 of a teaspoon of salt

Step-by-step explanation:

half of 1 is 1/2 or 4/8

half of 1/4 is 1/8

4/8 + 1/8 = 5/8

Question 3
Considering that Carl is 44 years old, what is the probability that he will live to the age of 85?

Answers

A probability of 41 into reaching the age of 85

Answer:

Considering that Carl is 44 years old, what is the probability that he will live to the age of 85?   0.3298

Step-by-step explanation:

What is the answer of this : 3+5-9*6/2

Answers

Answer:

3+5-9*6/2

3+5-9*3

3+5-27

8-27

-19

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