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Applied Biomechanics Exam Prep Questions and Answers
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Applied Biomechanics Exam Prep Questions and Answers
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Applied Biomechanics Exam Prepkenetics - Answer-study of forces that cause motion
kineamatics - Answer-study of movements/ motions
what does bio-mechanics study - Answer-the mechanical structure and function of biological systems
four applications of bio-mechanics - Answer-performance enhancement
injury prevention and rehab
development and refinement of equipment
research
improving daily living activity
mass - Answer-The measurement of the amount of matter in an object, can be dense or loose
rigid body - Answer-segment or object that will not deform when force is aplied
center of mass - Answer-the aveage point of mass of an object
,center of gravity - Answer-the point at which the weight of the body or system can be considered to act
moment of inertia - Answer-the resistence to a change in state during rotation
The closer the mass is to the the axix of rotation or point of momvement the lower the inertia = easier
to move they furtheraway the mass to the axis of rotation or movement the higher the moment of
interia and the harder it is to move.
linear motion - Answer-motoin where all body parts travel along parallel paths
angular motion - Answer-motion is a combination of translation and rotation around a fixed axis
displacement - Answer-The change of position of an object during motion, the distance covered from
start to their finishing position.
velocity - Answer-The distance and direction an object travels within a certain amount of time
V= total distance covered d
---------------------------------
Total time taken t
scalar - Answer-a quanity that only has magnitude
vector - Answer-a quanity that has direction and magnitude
angular velocity - Answer-the rate of movement in rotation
,acceleration - Answer-the rate of change in velocity with respect to time
A= (sum of all V)/ Time
moment - Answer-turing effect produced by a force
moment arm - Answer-the perpendiculat distance from the point of force application to the axis of
rotation
lever - Answer-system that changes the mechanical advantage of an applied force
angular acceleration - Answer-the rate of change in angular velocity with respect to time
force - Answer-the action of one body/object on another
direct (contact)
indirect (gravity)
ground reaction force - Answer-the forces that act against the body as a result of interction with the
ground
joint force - Answer-forces that exists between the angular surfaces of the joint
result of muscle, gravity and inteia forces
friction - Answer-the tangential force ating between two objects
static- when the two objects are at rest
kinetic- when objects are in motion
dry-
, fluid-
gravity - Answer-the force that attracts a body towards the centre of the earth, or towards any other
physical body having mass.
9.8 m/s2.
newtons first law - Answer-The body at rest will stay at rest or a body will stay constant in its motion
and velocity until acted on by a force.
newtons second law - Answer-A change in motion is proportional to the applied force and takes place in
the line of action of that force.
The force acting on the body is equal to the body's acceleration x its mass
newtons third law - Answer-For every action, there is an equal and opposite action, for every force
applied there is an equal and opposing force
impulse momentum relationship - Answer-the greater the impulse the greater the momentum
work - Answer-The transfer of energy when a force makes an object move over a distance
W= Force x distance
impulse - Answer-force x time
the effetc of force acting on an object over a period of time
power - Answer-the rate of doing work
Power = Force x distance
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