At 6:49 PM -0500 2/11/00, Patrick Austin wrote:
>Also, 100-50 mph braking is *very* tough on the brakes. Do the math.
Kinetic energy increases by the square of the velocity. A 100-50 mph
braking only has 133% more energy than 100-0 mph braking.
Umm, 133% more? Braking from 100-50 involves 75% of the emergy as 100-0,
right? (100*100 - 50*50) / (100*100) :)
Right. Expressed another way, braking from 100-0 only
dissipates 33% more energy than braking from 100-50. The original
statement had two typos: 133% should read 33%, and 100-50 and 100-0
were mixed up; but I got the gist of it.
Lee
W. Lee Hendrick
[email protected]
http://soliton.ucsd.edu/~hendrick/
