BIOMECHANICS FINAL EXAM WITH
CORRECT ANSWERS
Division of mechanics most applicable to the study of the human body in sport and
exercise - Correct Answers -Rigid-body mechanics
The study of the force and energy factors associated with systems in motion is called -
Correct Answers -Kinetics
Kinematics is the branch of mechanics that - Correct Answers -describes the pattern of
motion
Which of the following could not be involved in a kinetmatic description of a tennis
serve? - Correct Answers -Force
Primary focus of sport and exercise biomechanics is to - Correct Answers -improve
performance and reduce risk or injury
The "bio" in biomechanics stands for - Correct Answers -life
Famous English mathematician identified three laws of motion - Correct Answers –
Newton
Shear stress occurs when a force pulls on a body. - Correct Answers -False
Concentric muscle contractions produce negative work that results in a decrease in
mechanical energy. - Correct Answers -False
The active muscle groups that must produce the largest forces are the muscle groups
whose strength will be tested and the muscle groups that must be trained. - Correct
Answers -True
The purpose of identifying any extremes in joint ranges of motion is to identify those
muscles and tissues that may be stretched and possibly injured. - Correct Answers -
True
A free-body diagram displays - Correct Answers -The forces acting on a body
, The force that acts perpendicular to an object in contact with a surface is called -
Correct Answers -Normal contact force
The force that acts parallel to an object in contact with a surface is called - Correct
Answers -Friction force
As the surface area of two objects in contact increases, what happens to the force of
friction? - Correct Answers -It remains constant
When drawing a sketch of a dancer pushing off in a jump, which of the following is NOT
a force to be considered? - Correct Answers -The speed of the dancer across the floor
How does mass differ from weight? - Correct Answers -Weight is a force and mass is
the quantity of matter in a body
To fully define a vector quantity, you must specify - Correct Answers -Direction and
magnitude
Which of the following, when present, is NOT an external force applied to a runner? -
Correct Answers -Muscle Force
Velocity is calculated as - Correct Answers -displacement divided by time
units of acceleration - Correct Answers -m/s^2
Velocity is to displacement as speed is to - Correct Answers -distance
What factor differentiates velocity from speed? - Correct Answers -Direction
Which of Newton's laws is described by the equation F=ma? - Correct Answers -Second
Which quantity is the same in space as on earth? - Correct Answers -Mass
When a sprinter uses starting blocks to enhance running performance, which of
Newton's laws is best represented by the interaction of the sprinter and the blocks? -
Correct Answers -Action-reaction
As the mass of an object increases, what happens to its inertia? - Correct Answers -It
increases
Gravity can be defined as - Correct Answers -the force with which the earth pulls on an
object's mass
If a net horizontal force is applied to a body that is at rest, the body will - Correct
Answers -Accelerate
CORRECT ANSWERS
Division of mechanics most applicable to the study of the human body in sport and
exercise - Correct Answers -Rigid-body mechanics
The study of the force and energy factors associated with systems in motion is called -
Correct Answers -Kinetics
Kinematics is the branch of mechanics that - Correct Answers -describes the pattern of
motion
Which of the following could not be involved in a kinetmatic description of a tennis
serve? - Correct Answers -Force
Primary focus of sport and exercise biomechanics is to - Correct Answers -improve
performance and reduce risk or injury
The "bio" in biomechanics stands for - Correct Answers -life
Famous English mathematician identified three laws of motion - Correct Answers –
Newton
Shear stress occurs when a force pulls on a body. - Correct Answers -False
Concentric muscle contractions produce negative work that results in a decrease in
mechanical energy. - Correct Answers -False
The active muscle groups that must produce the largest forces are the muscle groups
whose strength will be tested and the muscle groups that must be trained. - Correct
Answers -True
The purpose of identifying any extremes in joint ranges of motion is to identify those
muscles and tissues that may be stretched and possibly injured. - Correct Answers -
True
A free-body diagram displays - Correct Answers -The forces acting on a body
, The force that acts perpendicular to an object in contact with a surface is called -
Correct Answers -Normal contact force
The force that acts parallel to an object in contact with a surface is called - Correct
Answers -Friction force
As the surface area of two objects in contact increases, what happens to the force of
friction? - Correct Answers -It remains constant
When drawing a sketch of a dancer pushing off in a jump, which of the following is NOT
a force to be considered? - Correct Answers -The speed of the dancer across the floor
How does mass differ from weight? - Correct Answers -Weight is a force and mass is
the quantity of matter in a body
To fully define a vector quantity, you must specify - Correct Answers -Direction and
magnitude
Which of the following, when present, is NOT an external force applied to a runner? -
Correct Answers -Muscle Force
Velocity is calculated as - Correct Answers -displacement divided by time
units of acceleration - Correct Answers -m/s^2
Velocity is to displacement as speed is to - Correct Answers -distance
What factor differentiates velocity from speed? - Correct Answers -Direction
Which of Newton's laws is described by the equation F=ma? - Correct Answers -Second
Which quantity is the same in space as on earth? - Correct Answers -Mass
When a sprinter uses starting blocks to enhance running performance, which of
Newton's laws is best represented by the interaction of the sprinter and the blocks? -
Correct Answers -Action-reaction
As the mass of an object increases, what happens to its inertia? - Correct Answers -It
increases
Gravity can be defined as - Correct Answers -the force with which the earth pulls on an
object's mass
If a net horizontal force is applied to a body that is at rest, the body will - Correct
Answers -Accelerate
