KINES 116 Study Guide For Final Exam With
Complete Solutions
Viscosity of a fluid is most dependent upon: - ANSWER resistance to shear force by the
fluid
Which of the following has the greatest influence over the magnitude of fluid drag an
object experiences as it moves through a fluid? - ANSWER the velocity of the object
The essence of Bernoulli's principle is that - ANSWER the pressure exerted by a fluid as it
flows over a surface is inversely proportional to the velocity of flow
The Magnus effect is a special application of Bernoulli's principle which describes the
behavior of: - ANSWER spinning balls
Streamlining reduces pressure drag by: - ANSWER reducing the rate of acceleration of
the fluid during displacement and replacement
Reducing the frontal area of an object moving through a fluid reduces pressure drag by:
- ANSWER A and B
A) reducing the mass of fluid that is displaced and replaced
B) reducing the distance that the fluid travels during displacement and replacement
, Which of the following could help a swimmer go faster in a race? - ANSWER A) shaving
the fur off their head and body
B) wearing one of those new full-body swimsuits
C) taking big, deep breaths and waiting to exhale until right before they take another
breath
D) keep their shoulders as narrow as possible, especially when they push off the wall
*E) All of the above
In which of the following human-powered events would a streamlined shape and lower
coefficient of drag make the greatest contribution to performance? - ANSWER road
cycling
A spinning ball follows a curved path of flight because: - ANSWER C) the spin causes
faster velocity of airflow on one side of the ball
D) the spin causes slower velocity of airflow on one side of the ball
*F) C and D only
The Coanda effect describes a force which results from: - ANSWER fluid changing
direction as it flows along the curved surface of an object
True or False? When struck properly with a golf club, a golf ball with dimples on it will fly
farther than a smooth golf ball. - ANSWER True
True or False? When a swimmer shaves the fur off their body, they are trying to improve
Complete Solutions
Viscosity of a fluid is most dependent upon: - ANSWER resistance to shear force by the
fluid
Which of the following has the greatest influence over the magnitude of fluid drag an
object experiences as it moves through a fluid? - ANSWER the velocity of the object
The essence of Bernoulli's principle is that - ANSWER the pressure exerted by a fluid as it
flows over a surface is inversely proportional to the velocity of flow
The Magnus effect is a special application of Bernoulli's principle which describes the
behavior of: - ANSWER spinning balls
Streamlining reduces pressure drag by: - ANSWER reducing the rate of acceleration of
the fluid during displacement and replacement
Reducing the frontal area of an object moving through a fluid reduces pressure drag by:
- ANSWER A and B
A) reducing the mass of fluid that is displaced and replaced
B) reducing the distance that the fluid travels during displacement and replacement
, Which of the following could help a swimmer go faster in a race? - ANSWER A) shaving
the fur off their head and body
B) wearing one of those new full-body swimsuits
C) taking big, deep breaths and waiting to exhale until right before they take another
breath
D) keep their shoulders as narrow as possible, especially when they push off the wall
*E) All of the above
In which of the following human-powered events would a streamlined shape and lower
coefficient of drag make the greatest contribution to performance? - ANSWER road
cycling
A spinning ball follows a curved path of flight because: - ANSWER C) the spin causes
faster velocity of airflow on one side of the ball
D) the spin causes slower velocity of airflow on one side of the ball
*F) C and D only
The Coanda effect describes a force which results from: - ANSWER fluid changing
direction as it flows along the curved surface of an object
True or False? When struck properly with a golf club, a golf ball with dimples on it will fly
farther than a smooth golf ball. - ANSWER True
True or False? When a swimmer shaves the fur off their body, they are trying to improve
