The acceleration of a model car along an incline is given by att)-1cm/sec', for ost<1. Ir (0) = 1 cm /sec, what is v(t)? (A) tan-1 t + ? In(t2 +11+1 cm/sec t2 +t cm/sec2, for (B) tan1t-nt+1)+1 cm/sec (C) t-1lnt+1)-tan 1t+1 cm/sec 1)+tan*t+1 cm/sec In(t? +1)+tan-'t+1 cm/sec (D) t+^r (E) t

Answers

Answer 1

Thus, the velocity function v(t) for the given  acceleration of a model car is given:

v(t) = { 1-t cm/sec for 0<=t<1;
        1 cm/sec for t>=1 }.

The given acceleration function is att)-1cm/sec', which means that the acceleration is negative and constant at -1cm/sec' for all values of t less than 1. We also know that the initial velocity at t=0 is 1 cm/sec.

To find the velocity function v(t), we need to integrate the acceleration function with respect to time.

For t less than 1, we have

att) = dv/dt = -1
Integrating both sides with respect to t, we get
v(t) - v(0) = -t
Substituting v(0) = 1 cm/sec, we get
v(t) = 1 - t cm/sec for 0<=t<1

For t greater than or equal to 1, the acceleration is zero, which means the velocity is constant.
Using the initial velocity at t=0 as 1 cm/sec, we have
v(t) = 1 cm/sec for t>=1

Therefore, the velocity function v(t) is given by
v(t) = { 1-t cm/sec for 0<=t<1;
        1 cm/sec for t>=1 }

Thus, the  velocity function v(t) for the given  acceleration of a model car is given v(t) = { 1-t cm/sec for 0<=t<1;
        1 cm/sec for t>=1 }.

Know more about the velocity function

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Related Questions

What is the solution to the system of equations below?
y = two-fifths x minus 3 and x = –10

Answers

Answer:

y = -7

Explanation:

y = 2/5x - 3
x = -10

y = 2/5(-10) - 3

y = -4 - 3

y = -7

Answer:

y = 1

Step-by-step explanation:

Substitute -10 for x so the equation would be y=2/5-10-3

that would then be y=4-3

which would equal 1


help find value of y please

Answers

Answer:

The third option

Step-by-step explanation:

60+y=180

y=120

Answer:

y = 120

Step-by-step explanation:

Mariana is painting her new bedroom purple. She has decided to mix her own purple paint. To create the shade of purple she likes best, she must maintain a ratio of 5 ounces red to 6 ounces blue. If she has 21 ounces of blue paint, how much red paint will she need?

Answers

Answer:

Red paint needed = x = 17.5 ounces

Step-by-step explanation:

Ratio of red to blue paint = 5 ounces : 6 ounces

If she has 21 ounces of blue paint, how much red paint will she need?

Ratio of red to blue paint = x ounces : 21 ounces

Equate the ratios

5 : 6 = x : 21

5/6 = x/21

Cross multiply

5*21 = 6*x

105 = 6x

x = 105/6

x = 17.5 ounces

Red paint needed = x = 17.5 ounces

OMG, GUYSS please helppp this is due in like.. 10 mins.. will give brainliest, please also add an explanation... THANKYOU I LOVE YOU!!!!

House builders unload a large crate of bricks onto the bed of a truck. The bottom of the crate measures 1.0 m by 2.0 m, and the crate weighs 38 000 N. What pressure does the crate exert on the bed of the truck?

Answers

Answer:

19,000 pa.

Step-by-step explanation:

I hope this helps

(3a+2.5b)^2=9a^2+6.25b^2+*
Please help before Thursday

Answers

Step-by-step explanation:

We have (x + y)² = (x + y)(x + y) = x² + 2xy + y².

Let x be 3a and y be 2.5b.

Therefore (3a + 2.5b)²

= (3a)² + 2(3a)(2.5b) + (2.5b)²

= 9a² + 15ab + 6.25b².

Hence the '*' sign should be replaced with 15ab.

Answer:

Given that, ( 3a + 2.5b )² = 9a² + 6.25b² + *

We know that, ( x + y )² = x² + y² + 2xy

According to the above problem, we get

( 3a + 2.5b )² = (3a)² + (2.5b)² + (2×3a×2.5b)

( 3a + 2.5b )² = 9a² + 6.25b² + 15ab

Therefore,

The sign " * " should be 15ab.

15ab is the right answer.

how to divide 134 800 by 240 using long method?​

Answers

Answer:

sumando

Step-by-step explanation:

sumando 240 134800 veces

Please find the value of x

Answers

the answer to this question is 18, since E bisects angle CBD, you know that CBE is half of it, therefore you do 94(angle CBD) and split it in half which is 47. then you do 3x-7=47. add 7 to both sides which gets you 3x=54. then divide both sides by 3. which is x=18. I hope this helps!

Harry and his family travel 204 miles in 3.4 hours. If they continue at this constant​ speed, how long will it take them to travel 420 ​miles?

Answers

Answe

7

Step-by-step explanation:

204 dived by 3.5

i did 204 dived by 60 then

420 dived by 60

The time taken by the family to reach is T = 7 hours

What is Speed?

Speed is defined as the rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude

Speed = Distance / Time

Given data ,

Let the speed be represented as S

Now , the value of S is

S = D / T

speed = distance / time = 204 miles / 3.4 hours = 60 miles per hour

where , the distance D = 420 miles

And , T = 420 / 60

T = 7 hours

Hence , the time taken for 420 miles is 7 hours

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What should be added with -7/12 so that the sum is 0 ?​

Answers

Answer:

7/12

Step-by-step explanation:

You need to get -7 to be a positive number so that its zero

-7+7=0

Then just add the denominator!!!

0/12=0

I hope this helps!!!!

40 percent of what is 524

Answers

Answer:

1310

Step-by-step explanation:

Answer:

7.63

(Hope this helps! Btw, I am the first to answer.)

if Ralf can bike in 45 kilometers in 3 hours,what will be his average rate of biking
A.9 kilometers/h
B.12 km/h
C.15 km/h
D.20 km/h​

Answers

Answer:

C.15 km/h

Step-by-step explanation:

speed= distance/time

find the measure of the angle
PLEASE HELP!!!
I-ready!

Answers

Answer:

35,.......,..............

The coordinates of one endpoint of a line segment are (4,-12). The length of the segment is 5 units. Determine four coordinates that could serve as the other endpoint of the given line segment.

Answers

Answer:

Step-by-step explanation:

Since we are given the starting position of the line segment and the length we can simply add or subtract the total length of the line segment to the x or y starting position. This would give us all the possible endpoints that are exactly 5 units away from the starting position in every direction. We can either add or subtract because this would give us the left, right, up, and down directions from the starting position. After making these changes we are left with the following four possible endpoints.

(-1 , -12)

(9 , -12)

(4, -17)

(4, -7)

how do you calculate the midpoint of question e)? I am very desperate. please help

Answers

Answer:

(-1,-1)

Step-by-step explanation:

Midpoint equation: [tex](\frac{x_2+x_1}{2}, \frac{y_2+y_1}{2})[/tex]

= [tex](\frac{-5/2+1/2}{2},\frac{-1/2-3/2}{2} )[/tex]

= [tex](\frac{-2}{2},\frac{-2}{2})[/tex]

=(-1,-1)

Use the formula and plug it in :)

The perimeter of the triangular park shown on the right is 15x-2 what is the missing length

Answers

Answer:

missing length is 6x - 1

Step-by-step explanation:

To find missing length, add two known sides and subtract from perimeter

(15x - 2) - (4x + 4 + 5x - 5)

(15x - 2) - (9x - 1) = 6x - 1

Julie earns $9 each week as an allowance. If she spends $5 each week for lunch money and saves the rest, which expression shows how much money she will save in x weeks?

Answers

Answer:

(x)4

Step-by-step explanation:

(x) is the amount of weeks and 4 is the amount of money that is saved every week.

Which expression is equivalent to 5x² + 4x - 2?
a- (5x-1)(x+2)
b- (5x+1)(x-2)
c- (5x+1)(x+2)
d- none of these

Answers

Answer:

D because non of them work lol

Step-by-step explanation:

Hope this Helped

What is the area of this?

Answers

Answer:

Step-by-step explanation:

[tex]A=\frac{hb}{2}\\ \\ A=\frac{14(20)}{2}\\ \\ A=140ft^2[/tex]

Answer:

150 ft

Step-by-step explanation:

You use Pythagoras theorem to work out the base of the triangle.

<3

✓3 correct to 5 decimal places​

Answers

Answer:

1,73205

Step-by-step explanation:

First, count out the five decimal places, and then look at the sixth place:

[tex]\sqrt{3}[/tex] ≈ 1,73205 | 0807...

The sixth decimal is less than 5, so we round to the smaller side.

What is 2/3 divided by 6/12? REDUCE ANSWER TO SIMPLEST FORM.

Answers

Answer:

1 1/3

Step-by-step explanation:

To divide fractions, multiply by the reciprocal.

So we have:

2/3 x 12/6 = 24/18 = 4/3 = 1 1/3

Simplify.
[tex]\frac{8\sqrt{6mn} + 6\sqrt{8mn} }{2\sqrt{2mn} }[/tex]

Answers

It’s the first answer
I used Math-way :)

Bir kutudaki kalemlerin sayısı, mavi renkli kalemlerin sayısından 48 fazladır. kutudaki kalemlerin sayısı, mavi kalem sayısının 9 katı olduğuna göre, kutuda kaç tane mavi kalem vardır​

Answers

Answer:

6

Step-by-step explanation:

Mavi kalemlerin sayısına x diyoruz

Kutudaki kalemlerin sayısı mavi kalemlerin sayısından 48 fazlaymış yani x+48 kutudaki kalemlerdir.

Kutudaki kalemlerin sayısı mavi kalem sayısının 9 katı ise x+48=9x olur

Şimdi denklemi çözmemiz lazım sol taraftaki x sağ tarafa - x olarak geçer sağ tarafda 8x kalır yeni denklemimiz 48=8x olur

Her iki tarafı da bilinmeyenin yanındaki sayıya böleriz bunun sonucu da 6=x çıkar

Mavi kalemlere de x demiştik yani 6 adet mavi kalem vardır.

solve for x or find x ​

Answers

the answer is x= 4

AB and CD are the same length

8x-1 =31

8x=32

x=4

A landscaping company charges customers a
one-time fee and an hourly rate of $10. For 1
hour of service, the company charges $35.
3. Which equation represents the total
charge t for h hours of landscaping?
Ot=10h
=10h+25
0
=250 + 10

Answers

Answer:

t = 10h +25

Step-by-step explanation:

let x be the one-time fee

hourly rate is $10

From given condition,

35 = x + 10*1

x = 35 - 10

x = 25

Therefore equation will be

t = 10h +25

For a school fundraiser, Troy sold 28 bags of popcorn and 40 candy bars and made $282. Jake sold 17 bags of popcorn and 20 candy bars and made $160.50.

What was the cost of a bag popcorn?

A. $10.35
B. $6.00
C. $6.27
D. $6.50

Answers

Answer:

Cost of a bag popcorn = $6.5

Step-by-step explanation:

Given:

Number of popcorn bags sold by Troy = 28

Number of candy bar sold by Troy = 40

Number of popcorn bags sold by Jake = 17

Number of candy bar sold by Jake = 20

Amount Troy earn = $282

Amount Jake earn = $160.5

Find:

Cost of a bag popcorn

Computation:

Assume;

Cost of a bag popcorn = a

Cost of a candy bar = b

28a + 40b = 282..........eq1

17a + 20b = 160.5...............eq2

eq2 x 2

34a + 40b = 321.........eq3

eq3 - eq1

6a = 39

a = 6.5

Cost of a bag popcorn = $6.5

Order the values of the differences from least to greatest. First, write the fractions as decimals. StartFraction 4 Over 5 EndFraction is and Negative 1 and one-half is . Next, plot the numbers on the number line. The greatest number is . Using the students' names, the correct order is .

Answers

Complete Question:

Ms. Perez's biology class grew sunflowers to learn about plants. During the first week, the average sunflower grew 3 inches. The table shows the difference from the average for three students.

Order the values of the differences from least to greatest.

Student: Raj. Difference (in.): 4/5

Student: Clara. Difference (in.): -1 1/2

Student: Jacob. Difference (in.): 0.9

Answer:

[tex]-1.5[/tex], [tex]0.8[/tex] and [tex]0.9[/tex]

The greatest is: 0.9

By student names: Clara, Raj and Jacob

Step-by-step explanation:

See comment for complete question

Given

Differences:

[tex]\frac{4}{5}[/tex], [tex]-1\frac{1}{2}[/tex], [tex]0.9[/tex]

Required

Order from least to greatest

We have: [tex]\frac{4}{5}[/tex], [tex]-1\frac{1}{2}[/tex], [tex]0.9[/tex]

First convert fractions to decimal

[tex]\frac{4}{5} = 0.8[/tex]

[tex]-1\frac{1}{2}= -1.5[/tex]

[tex]-\frac{3}{4} = -0.75[/tex]

So, the differences become:

[tex]0.8[/tex], [tex]-1.5[/tex], [tex]0.9[/tex]

Now arrange from least to greatest

[tex]-1.5[/tex], [tex]0.8[/tex] and [tex]0.9[/tex]

From the above representation,

The greatest is: 0.9

By student names, we have:

Clara, Raj and Jacob

This is done by simply replacing the numbers with the student name.

See attachment for number line

Answer:

4/5 is 0.8 , -1 1/2 is -1.5 , The greatest number is 1.3 , mia, raj, clara, jacob

Step-by-step explanation:

HELP PELASE ASAPppppp

Answers

Answer:D

Step-by-step explanation:

The ratio of dimes to quarters in a money bag is 12.2. If there are 8 quarters. How many dimes are there?

Answers

Answer:

98

Step-by-step explanation:

Given: The ratio of dimes to quarters in a money bag is 12.2

Also, there are 8 quarters.

To find: Number of dimes

Solution:

Number of dimes : Number of quarters = 12.2

Number of dimes : 8 = 12.2

Therefore,

Number of dimes = 12.2 × 8 = 97.6 ≈ 98

[
1
What is the distance between the points (-4, -8) and (10,-8)?
Need help

Answers

Answer:

2

Step-by-step explanation:

√(-8-8)^2 +(10+4)^2=

✓-32+28

✓4

=2

Which point on the number line has the greatest absolute value? 1.P (-6) 2. Q (-2) 3. R (1) 4. S (5)

Answers

Answer:

P(-6)

Step-by-step explanation:

1.P (-6) 2. Q (-2) 3. R (1) 4. S (5)

The absolute value of a number disregards ir removed the negative sign from the number and treats as positive.

The absolute value of the numbers given in the option above :

P(-6) = |6|

Q(-2) = |2|

R(1) = |1|

S(5) = |5|

Hence, the option which has the greatest absolute value when arranged on a number line is |6|

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