Biomechanical principles definitions Flashcards
linear motion
motion that occurs in a straight line or curved path
Angular motion
body moves along in a circular path
general motion
combination of linear and angular
projectile motion
flight of airbone objects
distance
measure path travelled from start to finish regardless of action
displacement
shortest change of position from initial to final position
speed
rate of motion determined by distance covered by time taken
velocity
rate of motion determined by disparent and divided by time taken
acceleration
rate of chnage in vvelocity experienced by an object over time
inertia
resistance of a body to change state of motion
force
either pushes or oulls that change an objects movemnt
newtons first law
an object at rest or in motion will remain until acted upo0n by an unbalanced force
newtons 2nd law
when force acts upon an object the accerlation that takes place depends on the amount of force thats applied. f=mxa
newtons 3rd law
for every action theres an equal and opposite reaction
linear momentum
quantity of motion a particular body mass has a product of mass x velocity
conservation of momentum
how the total movement of the 2 objects before a collision is equal to the total momentum of the 2 objects after colision
angular momentum
amount of rotation of a body around an axis
moment of inertia
measure of an objects resisstance to change and rate of rotation
summattion of movement/ forces
measure an o bjects resisstance to vhange and rate of roatation
projectile motion
anything we launch into the air, affected by fores of gravity and air resistance
equilibrium
the correct timing of body segments to produce max force
stability
a state which opposing forces are balanced
balance
the principle affected by the base of support, centre and line of gravity
static equilibrium
when all body parts are at rest
