Question

Jason is swimming the front crawl (freestyle) in the pool. Answer the following questions

Why do Jason’s lower extremities tend to sink in the water compared to his trunk?

Select one:

a. his body center of gravity is located closer to his feet than his center of buoyancy

b. his lower extremities have no buoyancy

c. this is the most efficient body position for speed through the water

d. he is kicking his lower extremities

Jason moves toward the far end of the pool as a result of….

a. the lift he gets from the Bernoulli Principle

b. the wave drag he produces

c. his buoyancy relative to his body mass

d. the net force vector acting on his body

Answer 1

Why do Jason’s lower extremities tend to sink in the water compared to his trunk?
  
     he is kicking his lower extremities (D)

     As the size of trunk is more than that of the lower extremities, the less area goes for sink and while he swims the kicks his lower extremities and tends to loose the buoyancy.

Jason moves toward the far end of the pool as a result of….

  The lift he gets from the Bernoulli Principle ( A)

   Jason can swim towards the other end of the pool easily when the lift he gets from the bernoulli principle and the wave grag that he produce makes the way for a ease swimming.