K2 Flashcards
The fundamental values of biomechanics are derived from
Basic laws of force and motion
Major forces to consider within sport include:
All the above:
Gravity
Air resistance
Contact between opponents
As a performance coach, telling an athlete their performance was “smooth” or “getting better” would be considered a
Qualitative evaluation
By improving one’s technique, the athlete may reduce
A and B correct
A. Injury to himself/herself
B. Injury to others
Rotational force is
Torque
The description of motion using distance and velocity is
Kinematics
Measurement is important within biomechanics to
All of the above:
Describe how elite performance was achieved
Identify why a sports-related injury occurred
Describe the current performance level
Predict athletic potential
Human movement is a battle between forces and resistance where force is applied at one end of a bone and resistance is applied at the other end
True
To produce large amounts of torque, a large force arm is needed
True
Knowledge of the mechanical principles have allowed the performance in sport to improve
True
Giving advice such as, “Throw harder” is beneficial to the athlete
False
Knowledge of biomechanics is a way to help a coach teach an athlete new skills
True
In order to teach a skill, it is mandatory for the instructor to correct perform the skill
False
Modern-day technology is a tool that can be utilized to provide an athlete important feedback
True
General motion is a combination of linear and angular motion
True
The majority of motion that occurs within sports can be classified as static
False
“Apps” and other tools are available that can measure the amount of force produced during specific exercise
True
Linear motion occurs when all points on an object travel in a straight line
True
Which of the following describes the quantity of motion that occurs
Momentum
A force is
All the above:
Defined as push or pull
Exerted on objects by other objects
Causes an object to start, stop, speed up, or slow down
Forces that occur between two objects touching each other are considered
A and C are correct
A. Contact forces
C. External forces
The equation for calculating acceleration is
velocity / time
An object at rest remains at rest, or in uniform motion in a straight line, unless it is compelled to change by an externally imposed force describes
First law of motion
Which of the following is the most common way to improve performance?
Improve technique
Teachers and coaches most often use which type of analysis?
Qualitative
Weight is a vector that is traveling
Straight down to the center of the earth
Which factors influence the flight of a projectile
All of the above:
Angle release
Speed release
Height release
Which of the following is the most helpful for athletes to improve their performance
Video feedback
Technology that can be used to measure linear kinetics includes
Timing gates
Physics is the most fundamental of the sciences
True
Units of measurement are an essential part of measurement
True
Forces are not considered vector quantities, but are represented by an arrow.
False
A goal of biomechanics is to reduce the likelihood of injury and rehabilitation in athletes
True
Newton’s first law of motion is considered a special case of the second law of motion
True
In rigid body mechanics, the object does not deform
True
Inertia is helpful at the beginning of a race, forcing the athletes to take long strides to get moving
False
The result of the vector addition of two or more vectors is known as the resultant force
True
Mass is the gravitational force acting on an object
False
Knowing biomechanical deficiencies may lead to developing a better training program for an athlete
True
Normal contact acts where?
Perpendicular to surface contact
Friction contact acts where?
Parallel to surface contact
Pulling is what kind of force?
Tensile
Pushing is what kind of force?
Compressive
10 m/s/s
gravity
mass referred to as
kg
weight referred to as
N
mass (kg) formula
w / g
N / 10
weight (N) formula
m * g
kg * 10
