KNS 422 Exam 1 Question and
answers rated A+ 2025/2026
Biomechanics - correct answer ✔the study of the structure and function of biological systems by the
methods of mechanics
How old is biomechanics - correct answer ✔>2300 yrs ago: Greeks and Romans
Who was the first Biomechanist? - correct answer ✔Aristotle
How old is Biomechanics as a Discipline? - correct answer ✔20th century late 60s early 70s
Ronald Brown and James Swimming Research - correct answer ✔Lift forces from the hand help propel
the body forward
From a mechanical perspective, why study biomechanics - correct answer ✔generate and control
movements
Primary goal of biomechanics - correct answer ✔performance improvement
Other goals of biomechanics - correct answer ✔technique improvement, training improvement,
equipment improvement, injury prevention and rehabilitation
Rigid Body Mechanics: Static movement - correct answer ✔no change in speed / rest
Rigid Body Mechanics: Dynamic movement - correct answer ✔moving
,Kinematics - correct answer ✔study of movement in space: description of what we see: How fast, how
high, how far an object traveled: geometry of movement
What are the 3 forms of motion? - correct answer ✔Linear (rectilinear, curvilinear), angular, and
general
Kinetics - correct answer ✔study of the underlying causes of motion
Force - correct answer ✔mass x acceleration; effect of one body on another; a push or pull applied to
an object; that which is needed to change the state of motion of an object
How do muscles generate force - correct answer ✔contract to push
3 basic measurements - correct answer ✔space, time, mass
Space (length) - correct answer ✔describe space in which movement occurs; measure of performance;
anthropometry (body height, hand length); defines rules/ parameters; The meter (m)
Time - correct answer ✔measure of performance (how quick) (reaction time); defines rules and
parameters; Second (s)
What do we get when we combine space and time - correct answer ✔speed, velocity, acceleration
Mass - correct answer ✔quantity of matter of which a body is composed; direct measure of a body's
resistance to change in linear motion; measure of an object's inertia wrt linear motion; kilogram (kg)
Large mass vs smaller mass - correct answer ✔more difficult to change the motion of a large mass than
a small mass; it takes more effort (force) to produce a given change in motion (acceleration) for the
larger mass
, Inertia - correct answer ✔natural property of a body to resist change in state of motion; body will
continue in its state of motion unless some force acts on it
Bag of groceries on a car seat. Slam on the brakes and what happens? Forces on car? Forces on
groceries? - correct answer ✔-groceries retain their state of motion unless a net force acts on them
-friction and weight
-weight of groceries
Acceleration - correct answer ✔rate of change of velocity of an object with respect to time; describes
an objects change in the state of motion of an object
Oder of operations - correct answer ✔P-(parentheses) E-(exponent) M-(multiply) D-(divide) A-(add) S-
(subtract)
Quantitative Biomechanics - correct answer ✔applying the mathematical concepts to human
movement
Scalar - correct answer ✔quantity described by magnitude (speed, mass, electric charge)
Vector - correct answer ✔quantity described by magnitude and direction (velocity, acceleration, force,
gravity, weight)
Distance - correct answer ✔distance traveled during object's motion: scalar
Displacement - correct answer ✔difference between starting and ending positions (vector and
independent of path followed)
answers rated A+ 2025/2026
Biomechanics - correct answer ✔the study of the structure and function of biological systems by the
methods of mechanics
How old is biomechanics - correct answer ✔>2300 yrs ago: Greeks and Romans
Who was the first Biomechanist? - correct answer ✔Aristotle
How old is Biomechanics as a Discipline? - correct answer ✔20th century late 60s early 70s
Ronald Brown and James Swimming Research - correct answer ✔Lift forces from the hand help propel
the body forward
From a mechanical perspective, why study biomechanics - correct answer ✔generate and control
movements
Primary goal of biomechanics - correct answer ✔performance improvement
Other goals of biomechanics - correct answer ✔technique improvement, training improvement,
equipment improvement, injury prevention and rehabilitation
Rigid Body Mechanics: Static movement - correct answer ✔no change in speed / rest
Rigid Body Mechanics: Dynamic movement - correct answer ✔moving
,Kinematics - correct answer ✔study of movement in space: description of what we see: How fast, how
high, how far an object traveled: geometry of movement
What are the 3 forms of motion? - correct answer ✔Linear (rectilinear, curvilinear), angular, and
general
Kinetics - correct answer ✔study of the underlying causes of motion
Force - correct answer ✔mass x acceleration; effect of one body on another; a push or pull applied to
an object; that which is needed to change the state of motion of an object
How do muscles generate force - correct answer ✔contract to push
3 basic measurements - correct answer ✔space, time, mass
Space (length) - correct answer ✔describe space in which movement occurs; measure of performance;
anthropometry (body height, hand length); defines rules/ parameters; The meter (m)
Time - correct answer ✔measure of performance (how quick) (reaction time); defines rules and
parameters; Second (s)
What do we get when we combine space and time - correct answer ✔speed, velocity, acceleration
Mass - correct answer ✔quantity of matter of which a body is composed; direct measure of a body's
resistance to change in linear motion; measure of an object's inertia wrt linear motion; kilogram (kg)
Large mass vs smaller mass - correct answer ✔more difficult to change the motion of a large mass than
a small mass; it takes more effort (force) to produce a given change in motion (acceleration) for the
larger mass
, Inertia - correct answer ✔natural property of a body to resist change in state of motion; body will
continue in its state of motion unless some force acts on it
Bag of groceries on a car seat. Slam on the brakes and what happens? Forces on car? Forces on
groceries? - correct answer ✔-groceries retain their state of motion unless a net force acts on them
-friction and weight
-weight of groceries
Acceleration - correct answer ✔rate of change of velocity of an object with respect to time; describes
an objects change in the state of motion of an object
Oder of operations - correct answer ✔P-(parentheses) E-(exponent) M-(multiply) D-(divide) A-(add) S-
(subtract)
Quantitative Biomechanics - correct answer ✔applying the mathematical concepts to human
movement
Scalar - correct answer ✔quantity described by magnitude (speed, mass, electric charge)
Vector - correct answer ✔quantity described by magnitude and direction (velocity, acceleration, force,
gravity, weight)
Distance - correct answer ✔distance traveled during object's motion: scalar
Displacement - correct answer ✔difference between starting and ending positions (vector and
independent of path followed)
