To meet a U.S. Postal Service requirement, employees'

Last updated: 7/30/2022

To meet a U.S. Postal Service requirement, employees' footwear must have a coefficient of static friction of 0.5 or more on a specified tile surface. A typical athletic shoe has a coefficient of 0.809. In an emergency, what is the minimum time interval in which a person starting from rest can move 3.16 m on a tile surface if she is wearing the following footwear? (a) footwear meeting the Postal Service minimum (b) a typical athletic shoe