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]
3 years ago
13

A 1502.7 kg car is traveling at 33.1 m/s when

Physics
1 answer:
Bond [772]3 years ago
5 0

By definition of average acceleration,

<em>a</em> = (20 m/s - 33.1 m/s) / (4.7 s) ≈ -2.78 m/s²

Vertically, the car is in equilibrium, so the net force is equal to the friction force in the direction opposite the car's motion:

∑ <em>F</em> = (1502.7 kg) (-2.78 m/s²) ≈ -4188.38 N ≈ -4200 N

If you just want the magnitude, drop the negative sign.

You might be interested in
Following are the different layers of the Sun's atmosphere. Rank them based on the order in which a probe would encounter them w
Ghella [55]

Answer:

Sequence of layers to encounter while travelling from Earth to the surface of the sun are:

Option (A) - Corona

Option (C) - Chromosphere

Option (B) - Photosphere

Explanation:

  • Corona- It represents the extreme outer region of the surface of the sun. It is normally not visible because of the light emitted from the sun. So it is difficult to be seen from the naked eye, but it can be seen during the time of total solar eclipse. The temperature in this region is about several million degrees.
  • Chromosphere- It is a layer that lies between the Corona and the Photosphere. This layer has a thickness of about 2000 kilometers and the temperature in this layer ranges from about 6000°C to 20,000°C.
  • Photosphere- This layer is the bright visible layer of the sun which is comprised of plasma and dark and cool sunspots, that forms on the sun due to the emerging of the magnetic field of the sun from its surface.

Thus, the correct sequences are mentioned above.

3 0
2 years ago
Fitness can be achieved only through
Firlakuza [10]
Fitness can only be achieved only through  A. Frequency 
7 0
3 years ago
Read 2 more answers
Using our understanding of the law of gravity. What happens to the gravity as we triple the distance between two objects?
MA_775_DIABLO [31]

Answer:

1/9

Explanation:

<em>Newton’s Law of Universal Gravitation </em>

Objects with mass feel an attractive force that is proportional to their masses and inversely proportional to the square of the distance.

F = GMm/r²

where  

F - the gravitatioal force in Newtons,  

M   and m  -two masses in kilograms  

r  - the separation in meters.  

G  - the gravitational constant (6.674*10 ⁻¹¹ N (m/kg) ² )

Because of the magnitude of  G , gravitational force is very small unless large masses are involved.

So according to above equation , when the masses are not changing , force is inversely propotional to the square of distance

F1 ∝ 1/r² ---------------(1)

F2 ∝ 1(3r)²

F2 ∝ 1/9r²--------------(2)

(2)/(1)

\frac{F_2}{F_1} =\frac{1}{9}\\ F_2 =\frac{F_1}{9}

From their you get as the distance tripled, Force reduce by a factor of 9(3³)

for example , assume the distance get doubled ,Force reduce by a factor of 4 (2²)

3 0
3 years ago
Which of the following colors are part of the visible spectrum?
Rudik [331]

Answer: the answer is D

Explanation: I just know

3 0
3 years ago
Read 2 more answers
Mr. Patel is looking for his cat in the garden at night. It is completely dark outside. Mr Patel shines his torch at the tree. W
UNO [17]

Answer:

the tree's light reflects into his eyes.

I think this is the ans

Explanation:

3 0
2 years ago
Other questions:
  • A woman floats in a region of the Great Salt Lake where the water is about four times saltier than the ocean and has a density o
    8·1 answer
  • Can you check this? Samantha swam upstream for some distance in one hour. She then swam downstream the same river for the same d
    14·2 answers
  • You cant see the cells in your body because most of them are very small true or false?
    8·2 answers
  • Jenna can run 9 km in 1 hour. If she runs at that speed for 30 minutes, how far will she go? *
    8·1 answer
  • If the vertical component of velocity for a projectile is 7.3 meters/second, find its hang time.
    5·1 answer
  • The resistance of an electric heater is 50 Ω when connected to 120 V. How much energy does it use during 15 min of operation?
    7·1 answer
  • A train A travelled a distance of 150 km in 3 hours, whereas, train 'B"
    5·1 answer
  • How would you use one of Newton’s laws to build a fast car?
    8·2 answers
  • What happens at the end of most cold currents?​
    13·2 answers
  • A boy is pulling his two sisters on a sled.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!