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
nlexa [21]
3 years ago
15

You throw a 20-n rock vertically into the air from ground level. you observe that when it is a height 16.0 m above the ground, i

t is traveling at a speed of 24.7 m/s upward.
Physics
1 answer:
timama [110]3 years ago
6 0

The problem is missing some parts. But here are the questions and answers.

a.       Use the work-energy theorem to find its speed just as it left the ground 

Initial Kinetic Energy = GPE + KE

1/2 * m * V^2 = m * g * h + 1/2 * m * v^2

V^2 = 2 * 9.8 * 15.6 + 25.6^2

=sqrt 968.96

V (initial speed) ≈ 31.130 m/s

 

b.      Use the work-energy theorem to look for its maximum height. 

H = 968.96 / 2 * 9.8 ≈ 49.44 <span>m</span>

You might be interested in
An 1,840 W toaster, a 1,460 W electric frying pan, and a 50 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (T
shutvik [7]

Answer:

Explanation:

Given

Power drawn by toaster P_1=1840\ W

Power drawn by Electric fan P_2=1460\ W

Power drawn by lamp P_3=50\ W

Voltage applied V=120\ V

If appliances are applied in parallel then Voltage applied is same

Power is given by P=\frac{V^2}{R}

Resistance of toaster R_1=\frac{120^2}{1840}=7.82\ \Omega

Resistance of electric Fan R_2=\frac{120^2}{1460}=9.86\ \Omega

Resistance of toaster R_3=\frac{120^2}{50}=288\ \Omega

Current is given by

I=\frac{V}{R}

I_1=\frac{120}{7.82}=15.34\ A

I_2=\frac{120}{9.86}=12.17\ A

I_3=\frac{120}{288}=0.416\ A

7 0
3 years ago
Read 2 more answers
I can't wait till Christmas!!!
Stells [14]

Answer:

Good for you!

4 0
3 years ago
How do you spell hard water in three letters.
Kay [80]
Ice, which is the solid state of water, the liquid
5 0
3 years ago
Read 2 more answers
The ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. What will be the angular frequency ω of
Alinara [238K]

Any kind of frequency, including the angular kind, is closely involved with
time. Still, for some unknown reason,you've given us no time information
whatsoever ... a peculiar decision on your part, since we can be sure that
it's right there, inexorably intertwined with the part of the question that you
DID copy and share with us. 

Furthermore and moreover, for one with no prior experience with simple
harmonic motion, the many symbols in this question such as ' d ', ' a ',
' << ', ' d₂ ', and ' a₂ ' would be of no help at all to guide him toward a
solution.  On the contrary, he would conclude that the question itself
had been posted by some alien life form.

To sum up:  Come back and post the drawing that goes along with the
question, make sure you have presented all of the information that the
question includes, and then we'll talk.


5 0
3 years ago
Beginning with earth, summarize the structure of the universe. Also Andromeda galaxy is located appromaxily 2.5 million light-ye
Leokris [45]
Because of the power of the light it is very strong so that is why light reaches all the way to earth
4 0
3 years ago
Other questions:
  • Radiation can travel through _______ making it different from convection and conduction
    7·1 answer
  • PLEASE NEED HELP NOW!11 50 POINTS AND BRAINLY!!!!!!
    9·2 answers
  • When the vapor pressure of a liquid is equal to the atmospheric pressure the liquid?
    8·2 answers
  • A0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad's to 11.0 rad/s. What is the wheel's average angular accelera
    14·1 answer
  • When you jump from an elevated position you usually bend your knees upon reaching the ground, which makes the time of the contac
    7·1 answer
  • Which of the following statements about this experiment is FALSE? Before each trial one should reshape the bob into something li
    9·1 answer
  • It was a cold, sunny day and the ground was covered with fresh snow. Maria wore her black sweatshirt outside to play in the snow
    6·2 answers
  • you press on the cqartiod ortery in your neck and begin counting . what are you mostly likely measuring?
    14·1 answer
  • Which of these is NOT a line on the tennis court?
    10·2 answers
  • You and your friend are having a discussion about weight. He claims that he weighs less on the on the 100th floor of a building
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!