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
pickupchik [31]
3 years ago
15

Which is the correct equation for calculating the kinetic energy of an object ?

Physics
2 answers:
AleksandrR [38]3 years ago
4 0
<h2>the correct answer is B KE=1/2mv^2. </h2><h3></h3>
Andru [333]3 years ago
3 0
Hello,

The answer is option B KE=1/2mv^2.

Reason:

In order to calculate the kinetic energy of a object you need to use option B which is the correct formula to find the kinetic energy.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
You might be interested in
A 75-g bullet is fired from a rifle having a barrel 0.540 m long. choose the origin to be at the location where the bullet begin
lyudmila [28]
Part a) The work done by the gas on the bullet is the integral of the force in dx, where x is the distance covered by the bullet inside the barrel with respect to the origin:
W= \int\limits^{0.540m}_{0} {F} \, dx =  \int\limits^{0.540m}_{0} {(16000+10000x-26000x^2)} \, dx =
=16000x+10000  \frac{x^2}{2} - 26000  \frac{x^3}{3}
By substituting the length of the barrel, L=0.540 m, we find the total work done by the gas on the bullet:
W=16000(0.540m)+10000  \frac{(0.540m)^2}{2} - 26000  \frac{(0.540m)^3}{3}  =
=8733 J=8.73 kJ

part b) The resolution of the problem is the same, we just have to use the new length of the barrel (L=0.95 m) inside the final formula, and we find the new value of the work:
W=16000(0.95m)+10000  \frac{(0.95m)^2}{2} - 26000  \frac{(0.95m)^3}{3}  =
=12280 J=12.28 kJ
5 0
3 years ago
A 5000 kg open train car is rolling on frictionless rails at 22 m/s when it starts pouring rain. A few minutes later, the car’s
Phantasy [73]

Answer:

500 kg

Explanation:

It is given that,

The mass of a open train car, M = 5000 kg

Speed of open train car, V = 22 m/s

A few minutes later, the car’s speed is 20 m/s

We need to find the mass of water collected in the car. It is based on the conservation of momentum as follows :

initial momentum = final momentum

Let m is final mass

MV=mv

m=\dfrac{MV}{v}\\\\m=\dfrac{5000\times 22}{20}\\\\=5500\ kg

Water collected = After mass of train - before mass of train

= 5500 - 5000

= 500 kg

So, 500 kg of water has collected in the car.

3 0
3 years ago
how does the composition of a mixture of hydrogen and oxygen differ of hydrogen and oxygen differ from the composition of a comp
mafiozo [28]
In a mixture, there will be a solute and solvent. The hydrogen and oxygen are still two different atoms that just mixed together. But in a compound, the hydrogen and oxygen have a bond, making a new and bigger molecule. A mixture can easily be separated by physical means but a compound isn't.
6 0
3 years ago
What quantity does a Percent measure?
eimsori [14]

In mathematics, a percentage is a number or ratio expressed as a fraction of 100.

3 0
3 years ago
Read 2 more answers
What is the definition of chemical change
Dima020 [189]
Chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms. These changes are chemical: iron rusting (iron oxide forms) gasoline burning (water vapor and carbon dioxide form)
3 0
3 years ago
Other questions:
  • Can someone help me with these physics questions?
    10·1 answer
  • Activity level for the following samples?
    5·1 answer
  • Which of the following is not true of mutations?
    13·2 answers
  • Which statement describes Redi’s experiment, which helped disprove spontaneous generation?
    10·2 answers
  • The final stages of a star's life depend on its mas. true or false?​
    9·1 answer
  • A jet of water squirts out horizontally from a
    15·1 answer
  • Where is most of the mass of an atom located? in the nucleus in the orbits in the electrons it is split between the nucleus and
    5·2 answers
  • Describe the difference between red light and blue light.
    5·1 answer
  • Consider a car that travels between points A and B. The car's average speed can be greater than the magnitude of its average vel
    6·1 answer
  • Need help in showing how to get the final velocity​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!