3 ms·
I personally would have gone with: because E=0.5mv^2 And by that i mean that energy is a much more intuitive concept than force. Why is E proportional to v^2?
by d--b 7y ago
I personally would have gone with: because E=0.5mv^2
And by that i mean that energy is a much more intuitive concept than force.
Why is E proportional to v^2? Now THAT’s an interesting question.
- earthicus 7y agoHere's a good explanation (it reduces to F=ma, of course!). This explanation starts by answering a different question, then points out that energy is analogous. https://physics.stackexchange.com/questions/67432/intuitive-meaning-of-factor-2-in-formula-of-vertical-throw-max-height-h-v2-2g/67433#67433 https://physics.stackexchange.com/questions/67432/intuitive-...
- XorNot 7y agoHow about this: because there's a mass involved with a non-zero cross section, so velocity is being added to an area, not a point. Hence v^2 is hiding the complexity of density vs surface area (the law was originally derived by observing steel ball impact craters on a bed of sand vs the height). 0.5 is because only one side hits. EDIT: And what surface area? Well General Relativity does like to mash up the concept of objects affecting space time due to having energy...