when drivers fall asleep at the wheel
The most common blood types are A, B, and O. Type O is the most common, followed by type A, then type B. Type AB is the least common blood type.
The most common blood type is O+, which is 40% of humans blood type.
O+ is the most common blood type. Thus, it is the type needed most often by hospitals for blood transfusions. AB- is the rarest of the "common" blood types, so your friend is mistaken.
Blood type O is the most common in both the US. as well as the world. Actually type O+ is the most common. Type O- is the most common of the RH negative blood types.
Officially, there are 8 different types of blood but it is close since there are positive and negative versions of blood types A,B,AB, and O. But the least common type would be blood type AB-.
fender bender
A rear end collision.
when drivers fall asleep at the wheel
head on broadside stationary object auto/pedestrian
An elastic collision conserves kinetic energy. In this type of collision, the total kinetic energy before the collision is equal to the total kinetic energy after the collision.
Side impact collision
Head on.
It is impossible to determine what type of geological formation this collision would create based only on your question's information. We do not know to which collision you are referring.
Head-On
A fatal one, of course.
An elastic collision is a type of collision in which there is no net loss in kinetic energy. In an elastic collision, both momentum and kinetic energy are conserved. This means that the total kinetic energy of the system before the collision is equal to the total kinetic energy after the collision.
A rear end collision will cause your head to press against the headrest. You might also be pressed forward during this type of collision, but the first movement is against the headrest.