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
Helen [10]
2 years ago
6

A sled starts off with an initial velocity of 8 m/s and slows down to 2 m/s after 3 seconds. What was its acceleration?

Physics
1 answer:
melomori [17]2 years ago
3 0

Answer:

-2m/s

Explanation:

You might be interested in
What are the evidences of molecular theory of magnetism​
Assoli18 [71]

Answer:

i hope it helps you please mark me as brainliest

Explanation:

Molecular theory of magnetism states, "If molecular magnets align in a row, then the substance exhibits magnetic property. If they are kept haphazardly, they do not exhibit magnetic property." This is the molecular theory of magnetism. If molecular magnets align in a row, then the substance exhibits magnetic property.

7 0
3 years ago
A professor's office door is 0.91 m wide, 2.0 m high, and 4.0 cm thick; has a mass of 25 kg; and pivots on frictionless hinges.
olasank [31]

Answer:

F= 5.71 N

Explanation:

width of door= 0.91 m

door closer torque on door= 5.2 Nm

In order to hold the door in open position we need to exert an equal and opposite torque, to the door closer torque, on the door.

so wee need to exert 5.2 Nm torque on the door.

If we want to apply minimum force to exert the required torque we need to apply force perpendicularly on the door knob (end of door) so that to to greater moment arm.

T= r x F

T= r F sin∅

F= T/ (r * sin∅)

F= 5.2/ (0.91 * 1)

F= 5.71 N

5 0
3 years ago
When two atoms bond chemically it is because of the interaction between
lorasvet [3.4K]

Answer:

i think answer should be C

6 0
2 years ago
Read 2 more answers
a student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a
kozerog [31]

Given:

Force, f = 12 \frac{kg-m}{sec^{2} }

Mass, m = 7 kg

Acceleration, a_{1} = 3\;\frac{m}{sec^{2} }

a = a_{1}+\frac{f}{m}

Substitute\;the\;values\;of\;f,\;m\;and\;a_{1}\;in\;the\;above\;equation,

a = 3+\frac{12}{7}

a = 3 + 1.714

Therefore, the acceleration is,

a = 4.714\;\frac{m}{sec^{2} }

<h3>Explain Acceleration?</h3>

An object's rate of changing its velocity is known as its acceleration, which is a vector quantity. If an object's velocity is changing, it is accelerating. When anything moves faster or slower in a straight line, it is said to have been accelerated. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.

To learn more about Acceleration, visit:

brainly.com/question/12550364

#SPJ4

3 0
1 year ago
How can you justifies the age of earth being 4.5 billion years old
IceJOKER [234]

Answer:

ummmmmmmmmm through science??

8 0
3 years ago
Other questions:
  • Which growth model is a realistic representation of population growth?
    13·2 answers
  • Confirmation bias can affect our problem-solving abilities. <br> A. True <br> B. False
    7·1 answer
  • what is the resistance of a light bulb if a potential difference of 120 v will produce a current of 0.5 a in the bulb? 0.0042 0.
    10·2 answers
  • Freezing Point Depression: Can someone explain this formula to me? ΔTf = Kfcm
    8·1 answer
  • What kind of energy does a flying bullet have?
    10·2 answers
  • How much time would Simpson save by increasing his average velocity to 26m/s East?
    13·1 answer
  • A rock is thrown vertically upward from some height above the ground. It rises to some maximum height and falls back to the grou
    6·1 answer
  • Statement that can be proven by observation or measurement is known as a(n):
    7·1 answer
  • How does using the straw demonstrate “point of application” of a force?
    14·2 answers
  • A runner is at rest at the starting line of a race. She accelerates at 3.3m/s/s. What is her position after 7.5s? Round your ans
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!