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
oee [108]
3 years ago
13

If a 20 N force acts on a 10 kg object for 0.5 seconds. If the object starts at rest, what would it’s new p (momentum) and v (ve

locity) be?
Physics
1 answer:
Galina-37 [17]3 years ago
3 0

Answer:

p=10\:\text{kgm/s}},\\v_f=1\:\text{m/s}

Explanation:

From Newton's 2nd Law, we have \Sigma F=ma. We can use this to find the acceleration of object after 20 N (force) is applied to the 10 kg object.

Substituting given values, we have:

\Sigma F=ma, \\20=10a,\\a=\frac{20}{10}=2\:\mathrm{m/s^2}

Now that we have acceleration, we can find the final velocity of object (after 0.5 seconds) using the following kinematics equation:

v_f=v_i+at, where v_f is final velocity, v_i is initial velocity, a is acceleration, and t is time.

Solving for final velocity:

v_f=0+2\cdot 0.5,\\v_f=\boxed{1\:\text{m/s}}

The momentum of an object is given as p=mv. Since we've found the final velocity and mass stays constant, we have:

p=10\cdot 1=\boxed{10\:\text{kgm/s}}

You might be interested in
What is a major contributor of greenhouse gases in the atmosphere?
ASHA 777 [7]

Answer:

a. burning of fossil fuel

Explanation:

Greenhouse effect is the trapping of the sun infrared rays in the outermost layer of the earths atmosphere due to the accumulation of some harmful gasses. This gases depletes the ozone layer

The major contributor of greenhouse gases is the burning of fossil fuels. Carbon dioxides are released into the atmosphere and leads to global warming and climatic changes per time

6 0
3 years ago
How can I solve this?
inysia [295]
There is no equation here
3 0
3 years ago
What is necessary to designate a position? A. a reference point B. a direction C. fundamental units D. motion E. all of these
max2010maxim [7]

Answer:

E. all of these

Explanation:

The designation of a point in space all the points that necessary

- reference point

- a direction

- fundamental units

- a direction

- motion

all are necessary to designate a point in space. Hence option E is correct.

For example in simple harmonic motion we need to specify all the above factors of the object in order to designate the position of the object.  

8 0
3 years ago
The humidity you feel in the southern states of the U.S. is _____. part of the water cycle water vapor caused by the Sun's heat
Likurg_2 [28]
Hey there!

The answer is : 
The <span>humidity you feel in the southern states of the U.S. is water vapor 
water vapor is between a gas and liquid so that is what gives a humid feel in the hot sun

Hopes this helps u :D
</span>
4 0
2 years ago
When I wave a charged golf tube at the front of the classroom with a frequency of two oscillations per second, I produce an elec
borishaifa [10]

To solve the exercise it is necessary to take into account the concepts of wavelength as a function of speed.

From the definition we know that the wavelength is described under the equation,

\lambda = \frac{c}{f}

Where,

c = Speed of light (vacuum)

f = frequency

Our values are,

f = 2Hz

c = 3*10^8km/s

Replacing we have,

\lambda = \frac{c}{f}

\lambda = \frac{3*10^8km/s}{2Hz}

\lambda = 1.5*10^8m

<em>Therefore the wavelength of this wave is 1.5*10^{8}m</em>

8 0
2 years ago
Other questions:
  • Which are reactions that release energy? endothermic reactions exothermic reactions decomposition reactions
    8·1 answer
  • Can someone please explain to me in simple terms Einsteins theory of relativity, also known as time dialation?
    10·1 answer
  • If the acceleration of a moving object is zero, which of the following best describes its motion
    7·2 answers
  • Match each statement with the type of contraceptive it describes
    12·1 answer
  • A boy reaches out of a window and tosses a ball straight up with a speed of 10 m/s. The ball is 20 m above the ground as he rele
    9·1 answer
  • Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option tha
    12·1 answer
  • A dog walks a distance of 55.5 meters in 120 seconds. What was its speed?
    11·1 answer
  • An element’s __________ is its row in the periodic table.
    8·1 answer
  • If a microwave oven is rated at 2400 watts and it is connected at a 120 volt
    13·2 answers
  • A large pot is placed on a stove and 1.2 kg of water at 14°C is added to the pot. The temperature of the water is raised evenly
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!