Facts to Record when in Traffic Accident

Based on the readings below, what facts, besides the damage, should you record when in a traffic accident?  Please refer to FACTS,
especially those facts that exemplify the conservation of linear momentum.   Do not list the witnesses' accounts, because that does
not abide by the laws of physics.
Based on the readings below, what facts, besides the damage, should
you record when in a traffic accident?  Please refer to FACTS,
especially those facts that exemplify the conservation of linear
momentum.   Do not list the witnesses' accounts, because that does
not abide by the laws of physics.