B Can anyone explain following scenarios in Force-Reaction

[A.T.]

I understand that kinetic energy is scalar instead of linear, but shouldn't it still amount the same if billions of molecules/atoms are vibrating at very high speed?

It's not the same, because equal but opposite momenta cancel to zero, while kinetic energies from such motion don't.

 

[A.T.]

there must be total amount of "kinetic energy" in form of general vibrations of particles that remains conserved..

No, because it can be converted into some form of potential energy.

 

[Velocity2D]

No, because it can be converted into some form of potential energy.

But in the end, everything in this universe is movement of particles. Particles are never still, so all energy that there is, should be ultimately tied to the vibrations of particles/waves.

 

[A.T.]

all energy that there is, should be ultimately tied to the vibrations of particles/waves.

No, because potential energy is not tied to movement.

 

[Velocity2D]

No, because potential energy is not tied to movement.

But let's go deeper, what is potential energy? Since the very nature of wave-particles is the vibration (nothing is never at rest and there are particles transmitting the "potential energy"), the energy of the whole universe must therefore be kinetic by nature. I think classical mechanics isn't adequate enough to define world, and saying that kinetic energy isn't conserved is flawed view.

Also, forces are made of carrier particles, so when something is "at rest" they are actually communicating with other particles through thise force carriers. https://en.wikipedia.org/wiki/Force_carrier

 

[A.T.]

saying that kinetic energy isn't conserved is flawed view.

If you redefine "kinetic energy" to mean total energy, then it will be conserved classically.

 

[johns1]

Big mass hits small mass ... F = m1 x A1 = m2 x A2 good grief you guys !