She was Lucky
According to a 2014 Business Fleet magazine article, a 20-pound object traveling at 55 mph hits with the force of 1,000 pounds at the time of impact. That is a compelling statement as to why load securement is necessary.
Source: Video originally posted by Wendy Cobb on 4/2/2011 on her YouTube channel.
This post was originally published on Oct. 21, 2015, and has since been updated.