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
chubhunter [2.5K]
2 years ago
9

Please solve in the next 10 minutes pleaseeee

Mathematics
1 answer:
Alex787 [66]2 years ago
6 0

Answer:

43.82 mph

266.67 feet

Step-by-step explanation:

Given :

S = √30fl

S = speed of car

f = drag Coefficient

l = Length of skid mark

If f = 0.8 ; l = 80 feets

s = √30fl

s = √(30*0.8*80)

s = √1920

s = 43.817

s = 43.82 mph

B.)

s = 80 mph

f = 0.8

s = √30fl

80 = √30*0.8*l

80 = √24l

Square both sides

80² = 24l

6400 = 24l

l = 6400/24

l = 266.67 feets

You might be interested in
A mine elevator was at a depth of -120 feet. After 15 seconds, the mine elevator was at a depth of -30 feet. What expression can
Dafna11 [192]

Answer:

The answers to the given question are:

i.  The equipment elevator is at a depth of 176 feet (-176 feet), while the miner's elevator is at a depth of 210 feet (-210 feet) below the surface.

ii. The miner's elevator is deeper than that of the equipment.

The speed of an object is the rate at which the object moves.

i.e. speed =

Thus,

Speed of the equipment elevator = 4 feet per second

Speed of the miner's elevator = 15 feet per second.

Time of descent of the equipment elevator = 30 + 14

                                 = 44 seconds

So that, the distance of the elevator at this time is;

speed =

⇒ distance = speed x time

                  = 4 x 44

                  = 176

  distance = - 176 feet

The distance of the miner's elevator after 14 seconds is:

speed =

⇒ distance = speed x time

                 = 15 x 14

                 = 210

 distance = - 210 feet

Thus, after another 14 seconds, the equipment elevator is at a depth of 176 feet (-176 feet), while the miner's elevator is at a depth of 210 feet (-210 feet) below the surface.

Therefore, the miner's elevator is deeper than that of the equipment.

Step-by-step explanation:

done

4 0
1 year ago
A small home speaker produces 0.200 ~\text{W}0.200 W of acoustical power. (This is achieved, for example, by a 10-Watt speaker o
Anika [276]

Answer:

i dont speak english

Step-by-step explanation:

4 0
3 years ago
This answer is the one I need to know
spayn [35]
The answers for the problems are: 6. -18
9. 6
12. -40
3 0
3 years ago
1.75 as a improper fraction and mixed number in simplest form
Murrr4er [49]
Improper 7/4 and mixed number 1 3/4
5 0
3 years ago
What is the value of z in the equation z − 3 = 22?
Stella [2.4K]

Answer:

25

Step-by-step explanation:

25-3=22

7 0
3 years ago
Read 2 more answers
Other questions:
  • Massimo has $90 on his bus pass every time he writes the bus he spends $2.50 write and solve an equation that Massimo can use to
    11·2 answers
  • Help me out on this question? *HELP NEEDED IMMEDIATELY*
    12·1 answer
  • Richard practice each of three piano solos for 5/12 hour expressed in simplest form how long did he practice in all
    7·1 answer
  • Two students in Mrs. Johnson's preschool class are stacking blocks, one on top of the other. Sydney's blocks are 4 cm high, and
    15·1 answer
  • Alexis washes 10 1/2 windows in 3/4 hour.at least rate how many windows can she wash in one hour
    14·1 answer
  • A teacher has 27 students in her class she ask the students to form as many grips of 4 how many students will not be in a group
    13·1 answer
  • Simplest for of the ratio 1 to 4
    10·2 answers
  • What is 4x(2x-3)-5(3x-4) in standard form
    11·1 answer
  • Dashboard
    11·1 answer
  • Which number is greater 35, 6.1
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!