In {TAIL ~ some embodiments}, {HEAD ~ acceleration} in longitudinal, transverse, and lateral directions may be detected, as well as rotational acceleration about axes extending in the longitudinal, transverse, and lateral directions 
In
In { TAIL ~ some embodiments } , { HEAD ~ acceleration } in longitudinal , transverse , and lateral directions may be detected , as well as rotational acceleration about axes extending in the longitudinal , transverse , and lateral directions
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH