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Could one of you explain in layman's terms, exactly why momentum isn't energy? He kind of needs a picture drawn for him (literally drawn);
So, as diappointing as it sounds, you might advise this guy that they can safely stop assuming that Newtonian physics really does model reality perfectly. It doesn't. It's just a model of reality that is not too bad. Momentum in Newtonian mechanics is just a concept that is useful and it is defined differently to energy.
He thinks that if there's a situation where the MV tells us the bigger ball and smaller ball have equal energy (possible with properly adjusted speeds), then the bigger ball must always "win" ie, do more work, knock over more pins and buildings. And he thinks this real world "result" somehow disproves, and/or undermines the usefulness of the KE formula. Is there a way to get him to understand the truth?
He believes, intuitively I guess, that this doesn't make common rational since.
Could one of you explain in layman's terms, exactly why momentum isn't energy? He kind of needs a picture drawn for him (literally drawn); rather than math. That's just how some people learn. Is there some way you could explain it that would cause the penny drop in his mind and make it make sense to him?
The fact is, painfully simple experiments can provide decisive answers.
I would like the opportunity to respond to the many assertions/accusations made in the previous post... And will do so if I'm provided the Liberty.
The fact is, painfully simple experiments can provide decisive answers. Show us a video of one then.
I'm not going to do anything until we can agree on a set-up, though.
I don't have a high-speed camera, so making accurate measurements of velocity directly would be potentially difficult for me.
calculate how fast the lighter ball is moving once it is thrown into the air by how high it flies
The second would be a similar idea, but using a spring instead of a lever.
You contend that things with the same momentum can have different Energies. I'm just saying show me.
One way to prove that momentum isn't energy is to give an example of something that has energy but not momentum. A battery sitting on a table is one such example. Since momentum is defined as mass times velocity, the battery has no momentum.
Show us a video of one then.
So the other thing we need to do here is agree what you will do when we show that you are wrong?Will you accept it and apologise; or will you continue to rant?
At 22 minutes or so, you can see that the results he measures agree with the predictions of conventional science to within 2% or betterAre you saying that your predictions offer better accuracy, or are you citing a video that shows science working, but pretending that it shows a failure?
I'll show you the arbor scientific video that completely contradicts the results of professor Lewin.