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
Kipish [7]
2 years ago
14

If the coefficient of kinetic friction between tires and dry pavement is 0.93. What is the shortest distance in which you can st

op an automobile by locking the brakes when traveling at 33.6 m/s ?
Physics
1 answer:
Alexeev081 [22]2 years ago
4 0

The shortest distance over which a car moving at 33.6 m/s may be stopped by locking the brakes is  61.93 m

The kinetic friction coefficient is 0.93.

using N, where N is the normal reaction = mg, frictional force can be evaluated.

Fr =- 0.93 x 9.8 = -9.114 m/s²

Friction, which takes the form of a decelerating force, helps the car come to a stop.

This frictional force equals the ma force, 

where ma = 7.84 m and a = 7.84 m/s2.

However, this acceleration is negative at 7.84 m/s2 since it is decelerating.

So, using the equations of motion,

v² = u² + 2ax

where;

v = final velocity

u = initial velocity

a = acceleration

0 = 33.6² + 2(-9.114)x

0 = 1128.96 - 18.228x

18.228x = 1128.96

x = 1128.96/18.228

x = 61.93 m

Therefore, the shortest distance is 61.93 m

To know more about shortest distance refer to:  brainly.com/question/16751593

#SPJ4

You might be interested in
how much force would be required to produce 88 j of work when pushing a box 1.1meters at an angle of 10 degrees?
ycow [4]

Answer:81.235N

Explanation:

Work=88J

theta=10°

distance=1.1 meters

work=force x cos(theta) x distance

88=force x cos10 x 1.1 cos10=0.9848

88=force x 0.9848 x 1.1

88=force x 1.08328

Divide both sides by 1.08328

88/1.08328=(force x 1.08328)/1.08328

81.235=force

Force=81.235

5 0
3 years ago
Closed clusters are groups of closely grouped stars that are located along the spiral disk of a galaxy.
Gre4nikov [31]
<span>False. Closed clusters are groups of closely grouped stars located in the halo of a galaxy, not along the spiral disk. Open clusters are groups of loosely associated stars located along the spiral disk of a younger galaxy with active star formation.</span>
5 0
3 years ago
When blue light of wavelength 460 nm falls on a single slit, the first dark bands on either side of center are separated by 45.0
lyudmila [28]

Answer:

width of slit =1.23× 10⁻⁶ m  

Explanation:

we know the condition of diffraction minima,

d sin θ = n λ

λ = wavelength     θ = angle between the central maxima and 1st  minima

d = slit width

for first minima  n = 1

now,

d =\dfrac{n \lambda}{sin \theta}

\theta = \dfrac{45^0}{2} = 22.5^0

d =\dfrac{1\times 460 \times 10^{-9}}{sin 22.5^0}

d = 1228 × 10⁻⁹ m  = 1.228× 10⁻⁶ m

d =  1.23× 10⁻⁶ m

width of slit =1.23× 10⁻⁶ m  

6 0
3 years ago
An airplane is flying horizontally with a constant momentum during a time interval ?t. (a) Is there a net impulse acting on the
goldenfox [79]

Answer:

Explanation:

Given

Airplane is flying with horizontally with a constant momentum during time interval \Delta t

Impulse is given by change in momentum, so there is no net impulse on the Plane because momentum is constant

(b) As there is no change in momentum therefore impulse of thrust and air drag is balanced i.e. both are equal in magnitude but act in opposite direction                            

7 0
3 years ago
Which property of a substance is not altered by a physical change?
Bezzdna [24]
Composition Is the property
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which formulas show the relationships between momentum, mass, and velocity? Check all that apply.
    6·2 answers
  • In physics the use of force to move an object is called work. True or false?
    13·1 answer
  • The potential energy an object has due to it position Is called _______ potential energy
    5·1 answer
  • Is F=1/l√T/m dimentionally correct?​
    8·1 answer
  • in coal-fired power plants, coal is burned to produce ____________________, which is then used to turn a turbine.
    6·2 answers
  • A 4.0-kg falcon catches a 1.0-kg dove from behind in midair. What is their velocity after impact if the falcon’s velocity is ini
    12·1 answer
  • Two bicycle tires are set rolling with the same initial speed of 4.0 m/s along a long, straight road, and the distance each trav
    12·1 answer
  • how many molecules of o2 are in 8.0 g of oxygen?if the o2 molecules were completely split into 9,how many mole of atoms of oxyge
    13·2 answers
  • Materials that hold electrons very tightly, and thus don't allow much static electricity to occur around them, are called
    12·1 answer
  • Sean is moving heavy furniture by sliding it across the floor. He puts a blanket underneath the furniture. Why dis this help him
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!