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
sertanlavr [38]
3 years ago
6

If a car skids to a stop in 3.8s while undergoing a uniform acceleration of -9.55 m/s2, what is the car’s velocity?

Physics
1 answer:
Lapatulllka [165]3 years ago
3 0

Answer:

36.29 m/s

Explanation:

We know from theory that v= v_0 +a\Delta t. Let's replace the value we know in our equation and solve for the only value left.

0 = v_0 - 9.55 \cdot 3.8 \\ v_0 = 9.55 \cdot 3.8 = 36.29 m/s

You might be interested in
True or False:
Leto [7]
True
False
True
My answers
4 0
3 years ago
Why does the mass spectrum of Br2 contain three signals whose heights are almost in the ratio of 1:2:1? What are the origins of
Eddi Din [679]
<span>The element bromine has two isotopes: Br-79 and Br-81, with a 50%-50% isotopic abundance. Statistically, 25% of bromine molecules will be Br79-Br79, 25% will be Br81-Br81 and 50% will be Br79-Br81. This is equivalent to a ratio of 1:1:2 or 1:2:1. The peaks in a mass spectrum just like chromatography reflect this relative abundance of different isotopic combinations.</span>
3 0
3 years ago
Which of the following units is the SI unit of velocity? a. meter c. meter per second b. meter·second d. second per meter
enot [183]
C. meter per second

Velocity and speed share the same SI unit.
5 0
3 years ago
A gyroscope slows from an initial rate of 32.0 rad/s at a rate of 0.700 rad/s2. How long does it take to come to rest? How many
Darya [45]

Answer:

t=45.7s

\alpha =116revolutions

Explanation:

Since we have given values of ω₀=32.o rad/s ,ω=0 and α=-0.700 rad/s² to find t we use below equation

w=w_{o}+at\\  0=(32.0rad/s)+(-0.700rad/s^{2} )t\\t=\frac{-32.0}{-0.700} \\t=45.7s

To find revolutions we use below equation

w^{2}=w_{o}^{2}+2a\alpha

Substitute the given values to find revolutions α

So

0=(32.0rad/s)^{2}+2(-0.700rad/s^{2} )\alpha  \\\alpha =\frac{(-32.0rad/s)^{2}}{2(-0.700rad/s^{2} )} \\\alpha =731rad

To convert rad to rev:

\alpha =(731rad)*(\frac{1rev}{2\pi rad} )\\\alpha =116revolutions

7 0
3 years ago
I need a quick way to answer a question on graphs in physics grade12
DIA [1.3K]
For you to answer a question on graphs, you have to first, identify the variables and coefficients given in the problem. Then, assess the Problem what is required given the <span>variables and coefficients. Lastly, develop a solution that would answer the required variables in the problem.</span>
6 0
3 years ago
Other questions:
  • How many different parts parts of the solar system can you see?
    8·1 answer
  • A sonar wave is reflected from the ocean floor. For which angles of incidence do the wave’s angle of reflection equal its angle
    7·1 answer
  • A cannon fires a shell straight upward; 2.3 s after it is launched, the shell is moving upward with a speed of 20 m/s. Assuming
    7·1 answer
  • The formula for Ohm’s law can be written: V equals <br><br> a. l x R<br> b. l/R<br> c. R/l
    15·1 answer
  • Which of these scientists worked on a team that unified the electromagnetic and weak nucleus force?
    8·2 answers
  • A turntable with a rotational inertia of 0.0120 kg∙m2 rotates freely at 2.00 rad/s. A circular disk of mass 200 g and radius 30.
    15·1 answer
  • A 20 kg mass is dropped from a tall rooftop and accelerates at 9.8 m/s2. What is the weight of the dropped object?
    13·2 answers
  • A thin film of oil rests on an inclined plane
    15·1 answer
  • In a battery powered flashlight, how is energy converted
    11·1 answer
  • the electrostatic force between two objects is 40N. if the charge of one object is cut in half, and the distance is doubled, wha
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!