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
mylen [45]
1 year ago
15

A car will skid to halt at a uniform rate of -9.4 m/s^2. If you measure skid marks that are 34 m long, with what speed was the c

ar going just before the driver slammed the brakes?
Physics
1 answer:
Klio2033 [76]1 year ago
6 0

The speed with which the car going just before the driver slammed the brakes is 25.28 m / s, if the car skids to halt at a uniform rate of -9.4 m/s^2.

v² = u² + 2 a s

v = Final velocity

u = Initial velocity

a = Acceleration

s = Displacement

v = 0

a = - 9.4 m / s²

s = 34 m

0 = u² + ( 2 * - 9.4 * 34 )

u² = 639.2

u = 25.28 m / s

Deceleration is the slowing down of an object. It can be negative acceleration or positive acceleration. Deceleration is negative if the object moves in positive direction and it is positive if the object moves in negative direction.

Therefore, the speed with which the car going just before the driver slammed the brakes is 25.28 m / s

To know more about deceleration

brainly.com/question/17618273

#SPJ1

You might be interested in
A vicious dog is pulling his owner with 150N of force . If the owner is dragged 40 meters , how much work did the dog do ?
Angelina_Jolie [31]

Afor:6000Nm

Explanation: work=force×distance

Work=150×40

Work=6000Nm

4 0
3 years ago
How to convert acceleration to velocity.
Nana76 [90]

You can't. Velocity and acceleration measure two different things, so their units are incompatible. It's like asking, "How many meters does this book weigh?"

Maybe you mean "find" acceleration using given velocities, or a velocity function?

4 0
3 years ago
Important result of french revolution
qaws [65]
The french revolution led to many deaths and impacted history because of the amount of life lost
8 0
3 years ago
A rock of mass m is thrown straight up into the air with initial speed |v0 | and initial position y = 0 and it rises up to a max
REY [17]

Answer:

Explanation:

Case 1:

mass = m

initial velocity = vo

final velocity = 0

height = y

Use third equation of motion

v² = u² - 2as

0 = vo² - 2 g y

y = vo² / 2g       ... (1)

Case 2:

mass = 2m

initial velocity = 2vo

final velocity = 0

height = y '

Use third equation of motion

v² = u² - 2as

0 = 4vo² - 2 g y'

y ' = 4vo² / 2g

y' = 4 y

Thus, the second rock reaches the 4 times the distance traveled by the first rock.

7 0
3 years ago
If we decrease the amount of force applied to an object, and all other factors remain the same, the amount of work completed wil
Nat2105 [25]
A ) decrease.
B ) increase.
C ) increase, then decrease.
D ) not change.

The answer is A) decrease

Take pushing a box, for example-- You  push your hardest then give out, still trying to push the box. You are doing less work than what you have started with!

( Mind marking me for branliest? ; ) )
4 0
3 years ago
Other questions:
  • At t=10 ~\text{s}t=10 s, a particle is moving from left to right with a speed of 5.0 ~\text{m/s}5.0 m/s. At t=20 ~\text{s}t=20 s
    15·1 answer
  • The metric unit for temperature is _______________.<br> a. fahrenheitb. celsiusc. secondd. liter
    8·1 answer
  • The name of a sedimentary rock is usually based on:
    12·1 answer
  • Wegut.
    6·1 answer
  • HELP ME PLEASE!!!!!! A couch is pushed with a force of 79 N and moves a distance of 7 m across the floor. How much work was done
    15·1 answer
  • Explain, using the particle theory of matter, how diffusion takes place.
    5·1 answer
  • Suppose that a car weighing 4000 pounds is supported by four shock absorbers Each shock absorber has a spring constant of 6500 l
    12·1 answer
  • Hi im in class and i need help!
    6·2 answers
  • How does fabric softener help prevent static electricity?
    13·1 answer
  • The amount of straight pipe needed to bend a given radius. Also, the actual length of the conduit that will be bent.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!