Life jackets help you float because
A)the jacket causes you to weigh less.
B)the jacket has the same density as an average human.
C)the jacket repels water.
D)if you sink,the jacket sinks.
E)the combined density of you and the jacket is less than your density alone.

Question

Quizplus · Accepted Answer

Life jackets are designed to have a lower density than the human body. When someone wears a life jacket, the combined density of the person and the jacket is less than the density of the person alone. This allows the person to float on top of the water rather than sink.

Life Jackets Help You Float Because