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
Naya [18.7K]
3 years ago
6

You serve a volleyball with a mass of 2.5 kg. The ball leaves your hand with a speed of 23 m/s. What is the kinetic energy of th

e ball?
Physics
1 answer:
Zarrin [17]3 years ago
8 0

Answer:

661.25, I believe!

Explanation:

KE = (1/2)(2.5)(23)^2

KE=(1.25)(529)

KE= 661.25

You might be interested in
How to ask a person out in a different way? LIke insted of do you want to go? Like i like this guy and i gave him a ig teddy bea
Greeley [361]
You should come off like would you like to hang out sometime 
6 0
2 years ago
Read 2 more answers
A dart leaves a toy dart gun with initial velocity of 7.76 m/s, regardless of the angle it is fired. What is the maximum horizon
In-s [12.5K]
Vf=vi plus 2 ad
0=7.76 + 2(9.8)d
d=0.395m
4 0
3 years ago
một ô tô chuyển động nhanh dần đều.Sau 10s vận tốc của xe tăng từ 2m/s lên 6m/s.Tính gia tốc của ô tô
Serjik [45]

Answer:

áp dụng công thức í, mình thấy câu này có rắc rối gì đâu

8 0
2 years ago
Assignments
sladkih [1.3K]

Hello there!

I hope you and your family are staying safe and healthy during this unprecendented time.

A) What is the work done?

Answer: We need to use the formula

w=-F_f(d)

w=-(35)(20)

w=-700J

B) What is the work done on the cart by the gravitational force?  

Alright, we know that the gravitional force is perpendicular to the diplacement. Therefore, we gonna use the following formula:

w=Fdcos90

w=0

C) What is the work done on the cart by the shopper?

This is the easier part, since we already know that the work done by the shopper is the same as the work done by the friction force

W shopper + W friction = 0\\W shopper = W-friction \\W shopper = 700J

D) Find the force the shopper exerts, using energy considerations.

F_f+Fcos25=0\\-35+Fcos25=0\\F=38.6N

E) What is the total work done?

You just need to add them:

w=wshopper+wfriction\\w=0

4 0
3 years ago
What wave travels through water and air?????
finlep [7]
Primary Waves
Secondary go only through air, but not water.
7 0
2 years ago
Read 2 more answers
Other questions:
  • In the 1980s, the term picowave was used to describe food irradiation in order to overcome public resistance by playing on the w
    7·1 answer
  • If your mass is 100 kg on earth, what do you weigh on the moon?
    11·2 answers
  • The line spectrum of lithium has a red line at 670.8 nm. Calculate the energy of a photon with this wavelength.
    7·1 answer
  • Ma puteti ajuta sa rezolv la fizica o problema ?
    15·1 answer
  • PLEASE HELP! How much heat is absorbed by 57g iron skillet when its temperature rises from 11°c to 30°C?
    12·1 answer
  • (II) How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.3 m across a rough floor without acceleration, if
    10·2 answers
  • How is it possible to blow a balloon? ​
    14·1 answer
  • A chinook salmon needs to jump a waterfall that is 1.5 m high. If the fish starts from a distance of 1.00 m from the base of the
    7·1 answer
  • What makes a funnel appear black
    15·1 answer
  • what happens to the frequency the centripetal force on an object in circular motion is doubled while the object keeps the same r
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!