0 Members and 1 Guest are viewing this topic.
If I'm in space and I throw a 2 L bottle of coke (2 kg) away from me at 1mph., do I received the same thrust if I shoot a dime (2 grams) away from me at 1000mph.?
If so isn't this proof against the kinetic energy formula?
The theory says an 8 lb bowling ball will produce twice as much "energy" as a 16 pound ball thrown with the same effort.
If I shoot two objects with inverse velocity to Mass ratios (for exp. 10m 5v vs 5m 10v) into gravity your formula says one object will have twice as much energy as the other at liftoff. If I let the objects fall, on an identical spring they will be recorded to impose the same pressure, the same joules of energy. How do you reconcile that fact with your theory? or Do you dispute the fact?
Your theory says a 5-ton train going 10 miles an hour has twice as much energy--ability to do work as a 10 ton going 5 miles an hour. I claim you will never prove that to be true, and that if you actually collected the energy of the moving objects in a scientifically sensible manor it will be clearly demonstrated that they have the same capacity to do work.
Momentum is defined as mass times velocity, so the two different cases should indeed have the same momentum.
No, it isn't. All it means is that a lighter object has to have a disproportionately larger amount of kinetic energy in order to conserve the momentum of the system.
I don't follow you. What physics term are you using when you say "effort"? Do you mean force?
If we ignore air friction, then the lighter of the two objects will have more total kinetic energy and will therefore fly higher before reaching maximum altitude. This act of flying upwards converts kinetic energy into gravitational potential energy. When the objects start to fall, they will convert all of that potential energy back into kinetic energy. So you would indeed expect the faster, lighter object to have more total kinetic energy when it falls back to the ground. There is no contradiction here.
It doesn't seem like you actually have an argument here and are simply calling it wrong because it defies your intuition.
If you can find something wrong with the derivation of the kinetic energy formula, you could well end up being famous:
Two joules of energy One Way, 2000 Jewels the other way. And you think the spaceship keeps going straight?
Momentum doesn't need kinetic energy to conserve energy
Can you provide physical evidence where kinetic energy is needed to conserve momentum?
At issue is the kinetic energy formulas assertion that we will require twice as much force
You're saying the same spring compression can produce different amounts of energy.
100 jewels
And then release the spring with a lighter object and gain an extra 100 free joules of energy. How do you explain this paradox?
And you have no physical evidence defending Your assertion of twice as much energy...
If there was a tug of war between the two trains do you really think the lighter one would win?
If I bang them into the same spring do you think the lighter one would compress it twice as much?
If we hook them up to a joule water tank do you think the lighter train will heat more water?
Newton never said f= ma... What he actually said is that the total Force will equal the total change in momentum. The derivations are free energy nonsense.
Seems a huge unfairness for you to be able to post to external links yet I am prohibited.
Yes, because the momentum on both sides of the ships is equal. If the ship were not to go straight, that would violate conservation of momentum.
It would be rather odd for you to claim that that an object with non-zero momentum has zero kinetic energy...
Because objects that have momentum have kinetic energy.
The kinetic energy equation says nothing about force.
No, I never said such a thing.
It's "joules".
There is no paradox. The spring will not be compressed by the same amount by the two objects.
There is a derivation that shows it is correct. Did you watch the video?
The depends. What is the pulling force of the two trains?
It depends on the specifics.
What is a "joule water tank"? How are you hooking it up?
So which part of the video is wrong and can you show how?
And how do you explain that we've been able to successfully get spacecraft to other planets?
It's a restriction only placed on new accounts (likely to reduce spam).
Show me it taking 4 times as much fuel to go twice as fast
Do you think you can create heat or deformation and transfer 100% of your momentum to another object?
1/2 vmv Was willfully created to Force reality to match religious daydreams.
The simple truth is the kinetic energy formula can't be defended as good science because there is NO good physical experimental evidence proving its predictions.
Doesn't change the overt unfairness
I'm afraid it's worse than that: It takes around 7 times as much fuel for a rocket to go twice as fast.The amount of fuel required to each a certain speed is governed by the Tsiolkovsky rocket equation, which can be expressed as:
You can transfer 100% of your momentum to another object without permanent deformation - this is shown by the classic "Newton's Balls" toy. Mechanical energy is also conserved in this case.
- When there is permanent deformation (eg if the two objects stick together after the collision), the momentum is conserved, but the initial object does not transfer all of its momentum to the other object - it transfers all of its momentum to the combined object. Mechanical energy is not conserved in this case, since some is transformed into heat.
As I understand it, Relativity says that the outcome of experiments is unchanged when you view them from any inertial frame of reference.
So the concept of "initial" and "final" momentum is purely in the eye of the beholder.
But momentum is conserved in all frames of reference
And energy is conserved in all frames of reference (if you include things like heat and sound as forms of energy)
No, it wasn't.
Yes there is.Practically the whole of engineering etc relies on it. If it was wrong, engineering design wouldn't work.
If you want to talk about a lack of evidence, let's consider your idea that 1/2 mv^2 is wrong.What evidence do you have?
It's a condition imposed on everyone, so it is obviously "fair".
The problem seems to be that you don't like it.
Fine; other fora are available.
And you certainly can't show the paradoxical reverse where I step on one end of a lever with 100 joules and create up to many hundreds of jewels on the other side of lever.
That is a misconception of yours.
If I apply 100N on one side of the lever and lift 1000N on the other side of the lever that does not mean more energy is expended on one side than the other,
The work (energy) done is force x distance
and the distance the 100N moves is much larger than the distance the 1000N moved (10 times actually),
so the number of joules is the same on both sides of the lever.
There is no misconception... The theory you are defending clearly claims that all you have to do to create more joules of energy is reduced Mass and increase velocity. Clearly your theory states things with the same momentum can deliver different amounts of energy.
Kinetic energy is in the units of joules why are you using Newton's?
If I drop one kilogram one meter (10 joules) on one side of the liver your theory says I can place lighter objects on the other side of the lever and produce Mass to Velocity relationships that will produce many times that 10 joules.
In gravity it's force x time
A lighter object placed on the other side of the leaver will move more distance in the same time. By your theory it's higher velocity will create a disproportionate increase in the joules of energy produced
Clearly 1 kg going 10 miles an hour isn't by your theory the same energy as 1/2 kg going 20 miles an hour. The momentum is the same You are the one claiming the energies are different
So 2000 joules of thrust causes the same effect as 2 joules of thrust?
Says you, with no physical evidence
The unit joules can be easily converted into weight pressure watts thermal units Etc.
If you don't think Force has something to do with kinetic energy why are you citing f=ma.
It is the direct implication of what you are asserting
Hate to point out the obvious... But a derivation isn't physical experimental evidence
"The depends"?.... The pulling force is established by the momentum that variable was provided.
Well you could Google it... But it is why the unit of energy is named after joule. It's a way of converting motion directly into heat and is intern a reliable way to measure something's energy.
If you won't watch my videos I won't watch yours...
As pointed out newton never said f=ma.
NASA clearly states it uses newtonian mechanics to navigate space...
Regardless you're evading the question, how can 2000 joules of trust produce the same effect as 2?
levers are not about velocity
If you want to include the velocity you can add that complication but you will still find that the conservation of energy holds.
Because levers are based on force.
False. Do the math you will discover you are wrong.
Wrong, force x time does not equal energy.
A lighter object placed on the other side of the leaver will move more distance in the same time. By your theory it's higher velocity will create a disproportionate increase in the joules of energy producedYou really need to learn some basic physics, this is getting worse and worse.
Yes, that is correct. Good job!!
Joules are a unit of energy, not thrust (force).
Moving objects must have kinetic energy.
Okay, so how many joules are in a newton?
Just because it's a part of the derivation doesn't mean it's a part of the final equation.
No, it isn't.
It is when the derivation is based on experimentally verified equations. It's easy to demonstrate that F=ma is accurate.
The problem with using trains is that there is friction and drag to take into account.
then neither train requires any force at all to keep moving at a constant velocity.
If that's the case, then the lighter, slower moving train will indeed heat the water more.
And if I did watch your videos, would you watch mine?
Whether or not Newton said something doesn't make it right or wrong.
NASA clearly states it uses newtonian mechanics to navigate space...And that involves the standard kinetic energy equation.
Regardless you're evading the question, how can 2000 joules of trust produce the same effect as 2?Because joules are a unit of energy, not thrust.
No surprise you have a funny definition of everyone.
If I can show a NASA engineer saying thrust is energy
a newton is 1/10 of a joule
a joule is the weight of 1 kg
Everyone who joins gets the same treatment.
We were all newbies once.
You still have not given any evidence for the KE formula being wrong.
You have, on the other hand proved comprehensively that you do not understand basic physics.
If I can show a NASA engineer saying thrust is energythen you will show an engineer making a mistake.So?
a newton is 1/10 of a jouleNoThat's like saying a kilometre is half a second.
A newton is the sitting weight of 100g in standard Earth gravity.
The effective velocity is 1 m per second.
If you allow the 100 g to fall one meter it will move at 9.8 m/s
and create a impact "weight" of 1 kg Or one joule