KNS 200 EXAM 2 QUESTIONS & ANSWERS
_____ is the applications of mechanical principles to understand effects of forces in
physical functions and structures - answer -biomechanics
_____ is a branch of physics that studies motion and the causes of motion - answer -
mechanics
What is the study of motion? - answer -kinematics
What is the causes of motion? - answer -kinetics
____ is the difference between initial and final positions - answer -displacement
What is the displacement formula? - answer -d = d(final) - d(initial)
What is the unit for displacement? - answer -meters
_____ is the rate of change in position - answer -velocity
What is the formula for velocity? - answer -v = (d(final) - d(initial)) / change in time
What is the untis for the velocity formula? - answer -meters per second
_____ is the rate of change in velocity - answer -acceleration
What is the acceleration formula? - answer -a = (v(final) - v(initial)) / change in time
What are the units for the acceleration formula? - answer -meters per second squared
____ is inertia (the quantity of matter in a body) - answer -mass
What are the units for mass? - answer -kg
_____ is a push or a pull - answer -force
What is the force formula? - answer -f = m(a)
M = mass
A = acceleration
What are the units for the force formula? - answer -newtons
What are some examples of force in nature? - answer -friction, gravity, air resistance
, What are the 2 types of forces? - answer -external forces & internal forces
_____ forces are applied by another object (ground, another person, equipment) -
answer -external
_____ forces are generated inside the body - answer -internal
What is an example of a force we apply to another object? - answer -archery
Forces _____ and _____ movement - answer -generate, control
T or f: forces maintain, protect, and improve the health of body tissues/systems -
answer -true
T or f: small changes in posture have large effects on our body - answer -true
What are newton's 3 laws of physics? - answer -(1st) law of inertia
(2nd) law of acceleration
(3rd) law of action & reaction
What do these laws tell us? - answer -how to generate forces and how forces affect
structure and function
What is the law of inertia? - answer -an object at rest will stay at rest unless there is a
force to cause it to move
An object in motion will continue that motion (direction and speed) unless there is a
force to cause it to change
What is force during law of inertia? - answer -f = 0
What is the law of acceleration? - answer -the change in motion of an object is
proportional to the force applied
The change in motion is in the direction that the force is applied
What is force during law of acceleration? - answer -f = ma
What is the law of action-reaction? - answer -for every action force, there is an equal (in
magnitude) and opposite (in direction) reaction
What is force in the law of action-reaction? - answer -f(ab) = -f(ba)
What are some common tools for biomechanics? - answer -motion capture (mocap),
force measurement devices, computer modeling & simulation
_____ is the applications of mechanical principles to understand effects of forces in
physical functions and structures - answer -biomechanics
_____ is a branch of physics that studies motion and the causes of motion - answer -
mechanics
What is the study of motion? - answer -kinematics
What is the causes of motion? - answer -kinetics
____ is the difference between initial and final positions - answer -displacement
What is the displacement formula? - answer -d = d(final) - d(initial)
What is the unit for displacement? - answer -meters
_____ is the rate of change in position - answer -velocity
What is the formula for velocity? - answer -v = (d(final) - d(initial)) / change in time
What is the untis for the velocity formula? - answer -meters per second
_____ is the rate of change in velocity - answer -acceleration
What is the acceleration formula? - answer -a = (v(final) - v(initial)) / change in time
What are the units for the acceleration formula? - answer -meters per second squared
____ is inertia (the quantity of matter in a body) - answer -mass
What are the units for mass? - answer -kg
_____ is a push or a pull - answer -force
What is the force formula? - answer -f = m(a)
M = mass
A = acceleration
What are the units for the force formula? - answer -newtons
What are some examples of force in nature? - answer -friction, gravity, air resistance
, What are the 2 types of forces? - answer -external forces & internal forces
_____ forces are applied by another object (ground, another person, equipment) -
answer -external
_____ forces are generated inside the body - answer -internal
What is an example of a force we apply to another object? - answer -archery
Forces _____ and _____ movement - answer -generate, control
T or f: forces maintain, protect, and improve the health of body tissues/systems -
answer -true
T or f: small changes in posture have large effects on our body - answer -true
What are newton's 3 laws of physics? - answer -(1st) law of inertia
(2nd) law of acceleration
(3rd) law of action & reaction
What do these laws tell us? - answer -how to generate forces and how forces affect
structure and function
What is the law of inertia? - answer -an object at rest will stay at rest unless there is a
force to cause it to move
An object in motion will continue that motion (direction and speed) unless there is a
force to cause it to change
What is force during law of inertia? - answer -f = 0
What is the law of acceleration? - answer -the change in motion of an object is
proportional to the force applied
The change in motion is in the direction that the force is applied
What is force during law of acceleration? - answer -f = ma
What is the law of action-reaction? - answer -for every action force, there is an equal (in
magnitude) and opposite (in direction) reaction
What is force in the law of action-reaction? - answer -f(ab) = -f(ba)
What are some common tools for biomechanics? - answer -motion capture (mocap),
force measurement devices, computer modeling & simulation
