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
astraxan [27]
3 years ago
11

A 3 kg bowling ball is thrown onto a mattress. If it takes 0.3 seconds to stop the ball using a force of 24 N, what was the init

ial velocity of the bowling ball when it first touched the mattress?
Physics
1 answer:
enyata [817]3 years ago
7 0

Answer:

-24 m/s

Explanation:

mass of the bowling ball =  3 kg

time (t) = 0.3 seconds

Force = 24 N

initial velocity u = ???

We know that;

Force = mass × acceleration (a)

So;

24 = 3 × a

a = 24/3

a = 8 m/s²

Also;

From equation of motion; acceleration is given by the relation;

a =\frac{v-u}{t}

if v = 0

then ;

8 = \frac{0-u}{0.3}

24 = 0- u

u = -24 m/s

Thus; the  initial velocity of the bowling ball when it first touched the mattress =  -24 m/s

You might be interested in
Where is paramcium normally found?
Scilla [17]
Paramecium<span> can be found in aquatic environments, usually in stagnant, warm water.</span>
8 0
3 years ago
Read 2 more answers
Who is most likely to benefit from use of lithium?
Alexxx [7]
I think that the people who are most likely to benefit from lithium is people with bipolar disorder. Because there have been tests that recently show that they use it for patients with that disease. 
4 0
3 years ago
Sort the sentences based on whether they describe radio waves, visible light waves, or both.
valentina_108 [34]

The electromagnetic spectrum includes a continuous spectrum of wavelengths that include:

Radio waves, microwaves, infrared light, visible, ultraviolet, X-rays, gamma rays

The wavelength decreases from radio waves to gamma rays, whereas the energy increases along the same direction.

In the given example, radio waves have a lower energy and higher wavelength than visible light. The latter can be perceived by the human eye, whereas radio waves are not visible to the human eye.

1) They have colors = visible light

2) They can travel in a vacuum  = both

3) They have energy = both

4) They’re used to learn about  dust and gas clouds = radio waves

5) They’re used to find the  temperature of stars  = visible light

6)They’re invisible = radio waves

6 0
3 years ago
An example of an exothermic reaction is:
elena55 [62]

Answer:

C.

Explanation:

Exothermic refers to a RELEASE of energy through a reaction(usually chemical). When salt dissociates, polar water molecules pull apart ions, releasing energy.

6 0
3 years ago
32. Which type of electromagnetic wave is used for nuclear power and medical treatment?
adelina 88 [10]

Answer:

Answers at the bottom!!

Explanation:

For the first answer: Gamma ray

Gamma rays and x-rays consist of high-energy waves that can travel great distances at the speed of light and generally have a great ability to penetrate other materials. For that reason, gamma rays (such as from cobalt-60) are often used in medical applications to treat cancer and sterilize medical instruments.

For the second answer: They both have technological uses.

In my opinion I'm pretty sure it's A because we do use microwaves and x-rays as technological uses.

Hope this helps!!

Happy Holidays and Season Greeting!!

ii Feliz Navidad a todos !!

3 0
3 years ago
Other questions:
  • Does parallax affect the precision of a measurement that you make
    11·2 answers
  • Most chemical reactions can be divided into how many main groups?
    15·1 answer
  • Sound waves in air are a series of
    6·1 answer
  • Explain its significance. Check all that apply. Check all that apply. In chemical and physical processes, matter exchanges energ
    9·1 answer
  • What is one exsample of a closed economy​
    5·2 answers
  • What can fall but never get hurt
    7·2 answers
  • Which structure has functions in both the respiratory system and the digestive system?
    13·2 answers
  • Which two statements are true about a system?
    7·2 answers
  • Morning friends!!<br><br><br> hope y'all have a good day!
    14·1 answer
  • When a cold air mass catches up with a warm air mass, the resut is often<br> a(n)<br> front.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!