General > RANT
Continuance of the INfinity Proposal
Numsgil:
Wow, you have shocked me. I actually thought you'd dismiss these as too easy to be worth the effort, but not only didn't you dismiss them, you got them wrong. I have overestimated you. I will have to re-examine my entire world view. Maybe I overestimate humanity in general.
Is it that you are not aware of SUVAT equations, or that you forgot that they apply in this case? You talk of thermodynamic equations, so I had assumed you had taken a physics course (where this is really week 1 stuff). Trying to solve it using guess and check is certainly, um, an interesting approach, but it won't give you a right answer. The first is simple, because he'll manage to catch and devour you before he reaches his top speed, so you don't have to build a piecewise function or anything weird like that. The proper answer is, assuming I'm not wrong either, 37.302 meters (not feet) (also rounded to the nearest thousandth place). And lest you cry foul, I did this entirely using paper, pencil, and the windows calculator found in accessories. No guess and check, just very straightforward algebra.
The second question: running towards a raptor is a bad idea. He may have a bum leg, but his teeth will still work just fine. I think the proper answer is to run at an angle that's closer to the wounded raptor, but not entirely towards. It might be entirely towards the wounded raptor, but I don't think that's the general solution. Also, the raptors aren't stupid, and they'll change their course as their relative angle to you changes, so there's definitely some calculus involved. I don't have an answer right now, but I might flex my brain tonight since it's such an interesting problem.
Last, Peter specifically mentions that you don't need to answer the third question.
Shasta:
My question is why does the person run so slow? If I had a raptor running after me I think I would run faster than a ~17 second 100m dash. Or I would shoot it, whatever.
Oh and Numsgil, you obviously forgot to add in reaction time (I guess we can keep the instantaneous acceleration) so I'd knock off a meter or two.
Xkcd is almost purely hilarious, for those who haven't read through the comics here a some good ones: Trolling , Ballmer Peak, Labrynth Puzzle, and Battle Room
Numsgil:
I thought about reaction time, but it doesn't mention the human's acceleration and uses the word "quickly". So I figured it should be taken as instantaneous (maybe you spotted it before it spotted you).
gymsum:
No idea what a suvat is at this point.
I did answer the question right, only I gave it in time (secs). in 6.13 seconds the human travels 37 some meters... Also the human is going three body lengths a second if the human is 6 feet tall, which is quite fast for such a slow and underdeveloped animal. 6.13*6m/s...... I didnt use guess and check.... I did it in my head as I have always done with algebra.... Sorry my answer was in worng format.
Numsgil:
--- Quote from: gymsum ---No idea what a suvat is at this point.
--- End quote ---
Well, do you understand the concept of hyperlinks? How about reading links I make.
--- Quote ---I did answer the question right, only I gave it in time (secs).
--- End quote ---
Yeah, that's not the same thing. You might get liucky and the teacher'll give you partial credit, though, but the question isn't answered right.
--- Quote ---in 6.13 seconds the human travels 37 some meters...
--- End quote ---
--- Quote ---Also the human is going three body lengths a second if the human is 6 feet tall, which is quite fast for such a slow and underdeveloped animal.
--- End quote ---
6 m/s is roughly like 12 miles per hour. If you double meters per second, you can get a rough estimate for miles per hour. 12 mph is totally doable, even by me (and I'm not a runner by trade, though if a raptor were chasing me you can bet that I would sure pick it up fast )
--- Quote ---6.13*6m/s...... I didnt use guess and check.... I did it in my head as I have always done with algebra.... Sorry my answer was in worng format.
--- End quote ---
Really? You took the square root of 89 in your head to three significant digits? And then added it to three and divided by two? All in your head? Well then, I am impressed. Oh, but...
--- Quote ---and the human only went 30 feet out, most likely 5. something but this is all right on the computer and I hate computer calculators as I prefer graphing calcs.
--- End quote ---
As a chance to redeem yourself, suppose the first question said that the raptor's top speed was 10 m/s. You know, that one with the bum leg. What's the distance you can get from the raptor before it devours you?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version