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
geniusboy [140]
3 years ago
7

A car is traveling 24.8 m/s and speeds up to 26.8 m/s in 4.3 seconds. What is the car's average acceleration during this time?

Physics
1 answer:
Jet001 [13]3 years ago
8 0
  • <em>Answer:</em>

<em>≈ 0.47 m/s²</em>

  • <em>Explanation:</em>

<em>Hi there !</em>

<em>Acceleration formula</em>

<em>a = (v₂ - v₁)/t</em>

<em />

<em>a = (26.8m/s - 24.8m/s)/4.3s</em>

<em>= (2m/s)/4.3s</em>

<em>≈ 0.47 m/s²</em>

<em>Good luck !</em>

You might be interested in
a 0.0215m diameter coin rolls up a 20 degree inclined plane. the coin starts with an initial angular speed of 55.2rad/s and roll
marissa [1.9K]

Answer:

h = 0.0362\,m

Explanation:

Given the absence of non-conservative force, the motion of the coin is modelled after the Principle of Energy Conservation solely.

U_{g,A} + K_{A} = U_{g,B} + K_{B}

U_{g,B} - U_{g,A} = K_{A} - K_{B}

m\cdot g \cdot h = \frac{1}{2}\cdot I \cdot \omega_{o}^{2}

The moment of inertia of the coin is:

I = \frac{1}{2}\cdot m \cdot r^{2}

After some algebraic handling, an expression for the maximum vertical height is derived:

m\cdot g \cdot h = \frac{1}{4}\cdot m \cdot r^{2}\cdot \omega_{o}^{2}

h = \frac{r^{2}\cdot \omega_{o}^{2}}{g}

h = \frac{(0.0108\,m)^{2}\cdot (55.2\,\frac{rad}{s} )^{2}}{9.807\,\frac{m}{s^{2}} }

h = 0.0362\,m

3 0
3 years ago
A conductor carrying 14.7 amps of current is directed along the positive x-axis and perpendicular to a uniform magnetic field. A
Gnoma [55]

Explanation:

It is given that,

Current carried in the conductor, I = 14.7 A (+x axis)

The magnetic force per unit length on the conductor, \dfrac{F}{L}=0.125\ N/m (-y axis)

The magnetic force is given by :

F=ILBsin\theta

\theta=90

F=ILB

B=\dfrac{F}{IL}

B=\dfrac{0.125}{14.7}  

B = 0.0085 T

According to right hand rule, the direction of magnetic force can be calculated. So, the direction of magnetic field is along +z axis. Hence, this is the required solution.

4 0
3 years ago
Why does a charged balloon stick to a neutral wall?
Jobisdone [24]
<span>When you bring a charged object, such as your balloon, near a neutral object that is classified as an insulator, than a temporary charge is induced in the neutral object. If the charged object is positive, then electrons in the neutral object will be attracted toward the charged object, creating a temporary imbalance of charges in the neutral object.</span>



7 0
3 years ago
The barrel of a rifle has a length of 0.855 m. A bullet leaves the muzzle of a rifle with a speed of 553 m/s. What is the accele
Novay_Z [31]

Answer:

Acceleration of the bullet will be 1778835.6 m/sec^2      

Explanation:

We have given length of the barrel refile s= 0.855 m

When the bullet leaves the muzzle its velocity is 553 m/sec

So final velocity v = 553 m/sec

Initial velocity will be 0 that is u = 0 m/sec

According to third equation of motion v^2=u^2+2as

553^2=0^2+2\times a\times 0.855

a=178835.6m/sec^2

5 0
4 years ago
1. A 12 kg barrel is pulled up by a rope. The barrel accelerates at 1.2 m/s2. Find the force exerted by the rope. Show all your
allochka39001 [22]
F-mg=ma
F-(12kg)(9.8m/s^2)=(12kg)(1.2m/s^2)
F-117.6N=14.4N
F=132 Newtons 
5 0
4 years ago
Other questions:
  • Rowdy Ron, a racecar driver with a mass of 70kg, survived a crash at 175km/h. He came at rest ib only 0.027 seconds
    7·1 answer
  • If initial speed of an object is v = 1340 ft/s. When it hits a wall it sinks in 5 in. If velocity of object while in the wall is
    9·1 answer
  • A student decides to measure the muzzle velocity of a pellet shot from his gun. He points the gun horizontally. He places a targ
    12·1 answer
  • A small block with a mass of 0.0600 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (Figur
    12·2 answers
  • an object with a mass of 125 kilograms is lifted through a height of 10 meters. how much work is done?
    10·1 answer
  • What is the mass if the force is 88N and has an acceleration of 4m/s2
    9·1 answer
  • Question.<br>what is a crystal?<br>​
    5·1 answer
  • A local AM radio station broadcasts at a frequency of 627 kHz. Calculate the wavelength at which it is broadcasting. Wavelength
    8·1 answer
  • to increase the frequency by 2 octave (s), to 4 f , by what factor would you have to increase the tension
    13·1 answer
  • Please, I need help with this question.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!