Viewing profile — cubic_earth

Simplifying assumptions are allowed when reasoning about physics. What you are saying is interesting, but I think you might be misapplying it. For small heights differences, the di…

Dropping something from 1 foot has 1/10th the kinetic energy compared to the same thing dropped from 10 feet. Damage is a very poor proxy for energy because there are all kinds of …

That indeed would have been better. Much too late for that edit now. But the subsequent debate over the intuitive claim is fun.

I suppose they are both "intuitive", but the example I gave was both intuitive and correct. Probably for anyone who has carried something or themselves up a hill, or climbed a set …

Fixed. Thanks.

It's easiest to visualize in terms of conversion from potential energy. We know intuitively that a ball atop a 20ft ladder has twice the potential energy of a ball atop a 10ft ladd…

1) An object will maintain its momentum forever unless some force acts upon it. 2) In the case of the rocket, it accelerates eastward. Even if parts fall off, and they slow down be…

It you are in a room, and you jump, does the wall suddenly slam into you at 1,000 mph? Why or why not?

Looking at the aerial footage before the launch, I was wondering why there is so much infrastructure so close to the pad. Clearly much of needs to be nearby, but perhaps those tank…

The amount of time a miner is economically viable for should be increasing as "Moore's Law" for ASICs slows down. Just the same laptops are usable for more years nowadays than they…

>"lifestyles would improve more than damage done by negative externalities" Just because you assert this doesn't make it true. Tragedy of the commons is at play - we have no good w…