A Closer Look at the Alexander Formula

Explanation of Formula

http://www.enchantedlearning.com/subjects/dinosaurs/anatomy/Locomotion.shtml

Other Supporting Sites

http://palaeo.gly.bris.ac.uk/Palaeofiles/Tracks/Report7/Speed.html

http://biology.wsc.ma.edu/ACUBE98/SIII3.htm

http://myschoolonline.com/page/0,1871,31679-188967-33-28693,00.html

  • What do the variables in the equation represent?

  • What happens to velocity as s gets larger or smaller?

  • If you run faster, are your strides likely to be longer or shorter?

  • What happens to v as h gets larger or smaller?

  • Think about the footprints left as a very short person (with a very short hip height), h, walks. Would a tall person have to walk very slowly or run very fast to land in the same footprints?

  • Should a larger s be associated with a smaller or larger v?

  • What are the units in which v should be reported?

  • With a rather small ostrich (hip height 1.3 meters), Farlow got a running stride length of 7 meters. What is the predicted velocity of this rather small ostrich? Please report the velocity in meters per second, kilometers per second, and miles per hour.

  • How confident are you when it comes to the accuracy of the Formula?