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At 06:59 AM 3/1/02, you wrote:sites
Why does it take a truck further to stop than a car? Data on many web
thegives about a 50% increase in stopping distances.
BUT
HS physics friction problems typically ask students to calculate the
stopping distance of a vehicle with speed x and COF y. This shows that
thereforemass of the object is cancelled when finding the acceleration and
why -should be independent of the stopping distance.
Same tires, same pavement.
What is different about the braking systems?
Web searches only reveal that the distances are greater. No mention of
besides the fact that trucks are heavier - useless.
Scott
*****************************
S.Goelzer
And come to think of it, loaded cargo trains can take a mile to stop.
Looks like a kinetic energy/available braking force ratio issue to me