Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Biomechanics Of Heading A Soccer Ball: Implications For Player Safety, Charles F. Babbs
Biomechanics Of Heading A Soccer Ball: Implications For Player Safety, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
To better understand the risk and safety of heading a soccer ball, the author created a set of simple mathematical models based upon Newton’s second law of motion to describe the physics of heading. These models describe the player, the ball, the flight of the ball before impact, the motion of the head and ball during impact, and the effects of all of these upon the intensity and the duration of acceleration of the head. The calculated head accelerations were compared to those during presumably safe daily activities of jumping, dancing, and head nodding and also were related to established …
An Analysis Of Speed Limit Policies For Indiana, Nisar M. Khan, Kumares C. Sinha
An Analysis Of Speed Limit Policies For Indiana, Nisar M. Khan, Kumares C. Sinha
JTRP Technical Reports
The repeal of the National maximum Speed Limit law in 1995 enabled individual states to set their own speed limits. Speed limits are necessary to ensure mobility while preserving highway safety. It is important that states continually monitor and evaluate existing operating speeds in the context of changing patterns of travel, and changing characteristics of highways, vehicles, drivers, and land-use. Any efforts to review existing speed limits should be accompanied by evaluation of policy impacts such as safety and economic productivity. The goal of this research is to develop a set of speed limit policy guidelines for the state. The …