Question

1. when people are involved in vehicle crashes, three collisions occur. which of the following is/are true?

a. the second collision is the human collision that occurs when the occupants of a vehicle come to a stop against the interior of the vehicle they were traveling in
b. the third collision occurs when the internal organs of the occupant strike the skeletal system and other organs in the stopped body of the occupant.
c. seat belts and air bags help reduce the effects of the second and third collisions by preventing belted occupants from striking the interior of the vehicle as the passenger compartment comes to a stop after the initial impact, called the first collision
d. all of the above

Explanation:

• Option a: The second collision in a vehicle crash is the human collision (occupants hitting vehicle interior after vehicle stops), so this is true.
• Option b: The third collision is internal (organs hitting skeleton/other organs as body stops), so this is true.
• Option c: Seat belts and airbags reduce injuries from second (human - vehicle) and third (internal) collisions by preventing occupants from hitting interior (after initial impact, first collision), so this is true.
• Since a, b, and c are all true, the correct option is d.

Answer:

d. All of the above