Article View: can.schoolnet.phys.sr
Article #157Re: How fast can Superman run?
From: Craig DeForest
Date: Fri, 12 May 1995 00:00
Date: Fri, 12 May 1995 00:00
18 lines
1339 bytes
1339 bytes
drizzt (drizzt@cml.com) wrote: : How fast can Superman run? (frictional stuff here) Hmmm... On the Moon, he can run at nearly 'c' ... no waitaminnit ... that's above lunar escape velocity. Ah ... Here we go: on the perimeter mountains of Niven's Ringworld, he can run at nearly 'c'. On the Earth ... well, something about your phraseology has me betting your professor wants you to think about fluid dynamic drag coefficients. Hint: subsonic fluid drag is roughly proportional to the cube of the speed, and roughly linear in frontal surface area. Treat Superman as a souped-up Toyota Tercel, and work from familiar speeds and power consumption rate of automobiles. -- Craig DeForest "PhD time: tee minus 45 days and holding for netnews delay"
Technical Details
Message-ID:
<3ov5uh$9mo@nntp.Stanford.EDU>Path:
arc1-ca.pugleaf.net!unknown!not-for-mailReferences:
<800249221@news2.compulink.com>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10b271,a4a6f67f96f39823,start X-Google-Attributes: gid10b271,public X-Google-Thread: 1226a2,a4a6f67f96f39823,start X-Google-Attributes: gid1226a2,public From: zowie@banneker.stanford.edu (Craig DeForest) Subject: Re: How fast can Superman run? Date: 1995/05/12 Message-ID: <3ov5uh$9mo@nntp.Stanford.EDU> X-Deja-AN: 102490431 references: <800249221@news2.compulink.com> organization: Stanford University followup-to: can.schoolnet.phys.sr,sci.physics newsgroups: can.schoolnet.phys.sr,sci.physics