What are the separate collisions that occupants can experience when a crash occurs?

They are known as 'secondary' injuries to the original collision because they occur AFTER the occupant suffers the impact of the initial collision and occurs when the passenger is thrown around either inside the vehicle or ejected from it.

The three collisions that happen when a car crashes is:

1. the car with the object

2. your body with the car

3. your internal organs with your skeleton.