Consider the momentum as the acceleration energy?

[aloshi]

Hello!
yes is from Sweden and my English is not good, but will try to do as best as possible. My question is:
why can not consider the momentum as the acceleration energy?

I know that:
Impulse is change in momentum which is not the same as energy
Impulse can be expressed either as F * (delta) t or m * (delta) v since it is the same thing. That the expressions are as follows from Newton's 2nd Kraftlag together with the definition of acceleration: (delta) v / (delta) t

but as we move into the energy we see that energy is defined as:
W = mv ^ 2 / 2
but what is the difference between rörelsenergi and momentum:

I couple of things:
An important difference is that momentum is always kept in a collision between two or more objects. The kinetic energy conservation is generally not in a collision.
Another difference between kinetic energy and momentum is that kinetic energy is a scalar (ie, has size but not direction) while the momentum is a vector (ie, both the size and direction)

but I can not really understand what the difference between momentum and kinetic energy (accelerating energy)

 

[aloshi]

if we compare the energy between, thus förendringen Middle two speeds we get that the change in energy is:
http://www.pluggakuten.se/wiki/images/8/8f/Untitled11111.jpg
I can not see a big difference between them, the only thing that separates them is that we have abbreviated removed (delta)stretch

 

[astrokreng]

would be

Thank you for your question! I understand your confusion, as momentum and kinetic energy can often be confusing concepts. Let me explain the difference between the two.

Momentum is a measure of an object's motion and is calculated by multiplying its mass by its velocity. It is a vector quantity, meaning it has both size and direction. The larger the mass and/or velocity of an object, the greater its momentum. Momentum is conserved in a closed system, meaning it cannot be created or destroyed, only transferred between objects. This is why momentum is always conserved in collisions.

On the other hand, kinetic energy is a measure of an object's energy due to its motion. It is calculated by multiplying half of the object's mass by the square of its velocity. Unlike momentum, kinetic energy is a scalar quantity, meaning it only has size and no direction. The larger the mass and/or velocity of an object, the greater its kinetic energy. Kinetic energy is not always conserved in collisions, as some of it can be transferred into other forms of energy such as heat or sound.

In summary, momentum and kinetic energy are two different ways of measuring an object's motion. Momentum is a measure of the object's motion itself, while kinetic energy is a measure of the energy due to that motion. They are related, but not interchangeable, as they have different units and represent different aspects of an object's motion. I hope this helps clarify the difference between the two concepts.