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
Tomtit [17]
3 years ago
13

1) You slam on the brakes of your car in a panic, and skid a certain distance on a straight level road. If you had been travelin

g twice as fast, what distance would the car have skidded, under the same conditions
Physics
1 answer:
aleksandr82 [10.1K]3 years ago
3 0

Answer:

d = 4 d₀o

Explanation:

We can solve this exercise using the relationship between work and the variation of kinetic energy

         W = ΔK

In that case as the car stops v_f = 0

the work is

          W = -fr d

we substitute

          - fr d₀ = 0 - ½ m v₀²

           d₀ = ½ m v₀² / fr

now they indicate that the vehicle is coming at twice the speed

          v = 2 v₀

using the same expressions we find

           d = ½ m (2v₀)² / fr

           d = 4 (½ m v₀² / fr)

           d = 4 d₀o

You might be interested in
A brick of mass 1.15 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle ha
stira [4]

Explanation:

It is given that,

Mass of the brick, m = 1.15 kg

Radius of the circle, r = 1.44 m

The cable will break if the tension exceeds 43.0 N

Let v is the maximum sped can have at the bottom of the circle before the cable will break. At the bottom of the circle, the net force is equal to the centripetal force along with the weight of the brick. So,

T=\dfrac{mv^2}{r}+mg

\dfrac{T}{m}-g=\dfrac{v^2}{r}

v=\sqrt{(\dfrac{T}{m}-g)r}

v=\sqrt{(\dfrac{43}{1.15}-9.8)\times 1.44}

v = 6.30 m/s

So, the maximum speed of the brick at the bottom of the circle before the cable will break is 6.3 m/s. Hence, this is the required solution.

8 0
3 years ago
If you have two objects on the edge of a cliff, how can you determine which one has the most potential energy?
True [87]

Answer: now take this with a grain of salt because I'm in middle school but I think that the more massive object has more potential energy.

Explanation:

5 0
3 years ago
What type of charge does an electron have?
GarryVolchara [31]

An electron has a negative charge. Hope this helps.

4 0
3 years ago
Read 2 more answers
How to measure the external diameter of a sphere
DanielleElmas [232]
Sphere is that the circular objects in the two dimensional space (1) circle
(2) disk. Two dimensional space is a set of points and the distance of that point,The two points of Sphere that length and center.
Sphere can constructed as the named of surface form circle about any diameter. circle is the special type of the revolution replacing the circle,
sphere is the distance r is the radius of the ball and circle is the center of mathematical ball,as the center and the radius of the sphere is to respectively.
The ball and sphere has not be maintained mathematical references as a solid references. A sphere of any radius is centered at the number of zero.
4 0
3 years ago
Which term below describes a measurement of how hard an object pushes against a surface?
Scilla [17]

I hope the answer is D. Pressure

8 0
3 years ago
Read 2 more answers
Other questions:
  • 4) You have a spring-loaded air rifle. When it is loaded, the spring is
    7·1 answer
  • I’m just gonna keep doing these answer and I will give brainliest
    5·2 answers
  • A force of 150 N is exerted 22° north of east. What is the
    15·1 answer
  • Conversations with astronauts on the lunar surface were characterized by a kind of echo in which the earthbound person’s voice w
    14·1 answer
  • What is the effect on an electric current when the voltage is increased? An increase in voltage causes the flow of electric curr
    7·2 answers
  • In​ physics, it is established that the acceleration due to​ gravity, g (in meters divided by sec squared) in meters/sec²​, at a
    10·1 answer
  • Mark all of the antimatter particlesa) Proton b) Electron c)Anti-top d) Gluon e) Tau Neutrino
    14·1 answer
  • ________ skids occur when the brakes are applied so hard that the front or rear wheels lost traction. Cornering
    6·2 answers
  • Please help will mark brainliest!
    15·2 answers
  • Question 45 points)<br> Which is an appropriate way to avoid heat related illness when exercising?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!