The reason a life jacket helps you float is
A) if you sink, the jacket sinks.
B) the jacket has the same density as an average human.
C) the jacket repels water.
D) the jacket makes you weigh less.
E) the density of both you and the jacket together is less than your density alone.

Question

Quizplus · Accepted Answer

Life jackets are designed to increase your overall buoyancy in water. By adding the low-density material of the life jacket to your body, the combined density of you and the jacket becomes less than the density of water, which helps you float. This is because the principle of buoyancy depends on the overall density of the object (in this case, a person wearing a life jacket) compared to the density of the fluid it is in (water).

The Reason a Life Jacket Helps You Float Is