Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The representative time-histories of the forces and accelerations for low repeated impacts (h=0.91 m) and high repeated impacts (h=1.52 m). For the low drop height (h=0.91 m), the magnitudes of the transmitted force (A) and acceleration (C) do not increase under repeated impacts; for the high drop height (h=1.52 m), the transmitted force (B) and acceleration (D) increase with increasing number of impacts.
