1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natima [27]
3 years ago
11

An airplane traveling 245 m/s east experiences turbulence, so the pilot slows down to 230 m/s. It takes the pilot 7 seconds to s

low down to this speed. What is the acceleration of the plane? Round your answer to the nearest hundredth.
2.14 m/s2
–2.14 m/s2
67.86 m/s2
–67.86 m/s2
Mathematics
2 answers:
sveta [45]3 years ago
6 0
I think the answer is B. -2.14 m/s2
kari74 [83]3 years ago
3 0

Answer:

Acceleration, a=-2.14\ m/s^2    

Step-by-step explanation:

Initial speed of the airplane, u = 245 m/s

Final speed of the airplane, v = 230 m/s

The pilot takes 7 seconds to slow down to this speed. Let a is the acceleration of the plane. The change in velocity per unit time is called the acceleration of an object. It can be calculated as :

a=\dfrac{v-u}{t}

a=\dfrac{230\ m/s-245\ m/s}{7\ s}

a=-2.14\ m/s^2

So, the acceleration of the plane is -2.14\ m/s^2. Hence, the correct option is (b).

You might be interested in
Ellie must Mix 6 tablespoons of plant food for every 2 gallons of water if she has 6 gallons of water how much plant food should
miv72 [106K]
She should use 18 tablespoons of plant food.

6÷2= 3

3×6= 18

Hope this helps! :)

\(^ ◇^)/

7 0
3 years ago
Can someone help me with this two problems?
ANEK [815]

2x+4y=0

substitute y with 0

2x+4(0)=0

solve the equation

2x+0=0

2x=0

divide by 2 on both sides

x=0

4x+8y=7

substitute y with 0

4x+8(0)=7

solve the equation

4x+0=7

4x=7

divide by 4 on both sides

x=7/4 or x=1 3/4 or x=1.75

3x-7y=-29

2x+2y=6

solve the bottom equation

3x-7y=-29

x=3-y

substitute for x

3(3-y)-7y=-29

solve the equation

y=19/5

now substitute for y

x=3-\frac{19}{5}

solve for x

x=-4/5

the possible solution of the system is the ordered pair

(x,y)=(-\frac{4}{5} ,\frac{19}{5})

3 0
3 years ago
Please help:( if anyone is good at algebra, assist me in this tragic time
Evgen [1.6K]

Step-by-step explanation:

x -2 -1 2 7

y -6 -6 -2 3

All y are in under root

5 0
3 years ago
Read 2 more answers
What is the answer to this problem
Aleks04 [339]

Answer:

14 cm^2

Step-by-step explanation:

You find the area of both triangles, and subtract by 4

6x3x1/2x2 - 2x2

18 - 4

14

3 0
2 years ago
What are the three parts of the Venn diagram
julsineya [31]
Idk idk idk idk idk idk
5 0
2 years ago
Other questions:
  • Choose as many answers as apply. Which of the following are metric measurements? gallon liter meter pint quart kilogram kilowatt
    10·2 answers
  • Doubling the difference between a number and 4 is 6 more than the number.
    15·1 answer
  • Ava is 23 cm taller than olivia, and olivia is half the height of Lucas. if Lucas is 1.78 m tall, how tall are Ava and olivia? e
    6·1 answer
  • The value of y varies directly with x, and y = 48 when x = 16. Find y when x = 176.
    9·2 answers
  • Six cakes cost £1.80 how much do ten cakes cost
    9·2 answers
  • Mike, who has 6 video games, has half as many games as paul
    5·2 answers
  • 1. Bailey made 5 - cups of applesauce. He
    13·1 answer
  • How does information about cell phones and cameras relate to the author’s main idea? It suggests Nessie is quite difficult to ca
    10·2 answers
  • Which describes the transformation shown below <br><br>A<br>B<br>C<br>D
    6·1 answer
  • Celeste wants to have her hair cut and permed and also go to lunch. She knows she will need $68. The perm costs twice as much as
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!