Life jackets help a person float because they:

  1. add a large volume with little weight, increasing upthrust
  2. reduce the density of water
  3. make the person heavier
  4. increase the density of the person
Answer

A) add a large volume with little weight, increasing upthrust

Lower average density. SLO P-11-B-34 · Application

Physics MCQ · More Fluid Statics and Dynamics MCQs · Practise