APA 2114 Final Exam with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
(Just Released)
biomechanics ✔Correct Answer-- the inter discipline that measures, describes, analyzes and
assesses human movement.
why are forces important? ✔Correct Answer-- they are required for motion because they
enable us to start moving, stop moving and change direction.
- they are required to maintain balance and avoid collapse in stationary positions.
What are forces? ✔Correct Answer-- something that accelerates or deforms an object of a
certain mass
- measured in Newtons
- vector quantities
internal forces ✔Correct Answer-forces that act within the object or system whose motion is
being investigated
- tension (stretch) and compression forces on muscles, tendons, bones, etc.
- incapable of changing the motion of the body centre of mass
external forces ✔Correct Answer-- forces that act on an object as a result of its interaction
with he environment surrounding it.
- contact forces or non contact forces
weight ✔Correct Answer-the force of gravity acting on an object of mass m
dry friction ✔Correct Answer-acts between non-lubricated surfaces of solid objects or rigid
bodies in contact and its parallel to the surfaces
collinear forces ✔Correct Answer-have the same line of action
concurrent forces ✔Correct Answer-do not act in the same line of action but do act through
the same point
linear motion ✔Correct Answer-all parts on a body move the same distance, in the same
direction, in the same amount of time
rectilinear ✔Correct Answer-all points on a body move the same distance in the same time
while following a straight line
, curvilinear ✔Correct Answer-all points on a body move the same distance in the same time
while following a curved path
projectile ✔Correct Answer-a body in free fall that is subject only to the forces of Gracie and
air resistance
factors that affect the trajectory of a projectile ✔Correct Answer-- angle of projection
- projection speed
- the relative height of projection
Newton's First Law ✔Correct Answer-- law on inertia
- every body continues in its state of rest, or of uniform motion in a straight line, unless it is
compelled to change that state by forces impressed upon it.
Newtons Second Law ✔Correct Answer-- law of acceleration
- the change of motion of an object is proportional to the net external force impressed; and is
made in the direction of the straight line in which the force is impressed.
kinetics ✔Correct Answer-the branch of mechanics that studies the actions of forces in
producing or changing the motion of masses
Newton's Third Law ✔Correct Answer-- law of action-reaction
- the mutual forces of action and reaction between two bodies are equal, opposite and collinear.
This means that whoever a first body exerts a force F on a second body, the second body exerts
a force -F on the first body
tools for measuring kinematics ✔Correct Answer-- timing devices
- devices measuring space
- velocity measuring systems
- optical imaging systems
- motion capture systems
- accelerometers
- IMUs
tools for measuring kinetics ✔Correct Answer-- force platforms
- force transducers
- pressure sensors
- electromyography
- computer stimulation and modelling
motion capture systems ✔Correct Answer-- devices for recording movement in 3D which is
then translated onto a digital model
accelerometers ✔Correct Answer-- devices for measuring accelerations
Answers |Actual Complete Update |Already Graded A+
(Just Released)
biomechanics ✔Correct Answer-- the inter discipline that measures, describes, analyzes and
assesses human movement.
why are forces important? ✔Correct Answer-- they are required for motion because they
enable us to start moving, stop moving and change direction.
- they are required to maintain balance and avoid collapse in stationary positions.
What are forces? ✔Correct Answer-- something that accelerates or deforms an object of a
certain mass
- measured in Newtons
- vector quantities
internal forces ✔Correct Answer-forces that act within the object or system whose motion is
being investigated
- tension (stretch) and compression forces on muscles, tendons, bones, etc.
- incapable of changing the motion of the body centre of mass
external forces ✔Correct Answer-- forces that act on an object as a result of its interaction
with he environment surrounding it.
- contact forces or non contact forces
weight ✔Correct Answer-the force of gravity acting on an object of mass m
dry friction ✔Correct Answer-acts between non-lubricated surfaces of solid objects or rigid
bodies in contact and its parallel to the surfaces
collinear forces ✔Correct Answer-have the same line of action
concurrent forces ✔Correct Answer-do not act in the same line of action but do act through
the same point
linear motion ✔Correct Answer-all parts on a body move the same distance, in the same
direction, in the same amount of time
rectilinear ✔Correct Answer-all points on a body move the same distance in the same time
while following a straight line
, curvilinear ✔Correct Answer-all points on a body move the same distance in the same time
while following a curved path
projectile ✔Correct Answer-a body in free fall that is subject only to the forces of Gracie and
air resistance
factors that affect the trajectory of a projectile ✔Correct Answer-- angle of projection
- projection speed
- the relative height of projection
Newton's First Law ✔Correct Answer-- law on inertia
- every body continues in its state of rest, or of uniform motion in a straight line, unless it is
compelled to change that state by forces impressed upon it.
Newtons Second Law ✔Correct Answer-- law of acceleration
- the change of motion of an object is proportional to the net external force impressed; and is
made in the direction of the straight line in which the force is impressed.
kinetics ✔Correct Answer-the branch of mechanics that studies the actions of forces in
producing or changing the motion of masses
Newton's Third Law ✔Correct Answer-- law of action-reaction
- the mutual forces of action and reaction between two bodies are equal, opposite and collinear.
This means that whoever a first body exerts a force F on a second body, the second body exerts
a force -F on the first body
tools for measuring kinematics ✔Correct Answer-- timing devices
- devices measuring space
- velocity measuring systems
- optical imaging systems
- motion capture systems
- accelerometers
- IMUs
tools for measuring kinetics ✔Correct Answer-- force platforms
- force transducers
- pressure sensors
- electromyography
- computer stimulation and modelling
motion capture systems ✔Correct Answer-- devices for recording movement in 3D which is
then translated onto a digital model
accelerometers ✔Correct Answer-- devices for measuring accelerations
