biomechanical movement Flashcards
(14 cards)
what is mass
the quantity of matter a body possesses
what is the unit of mass
kg (scalar quantity)
what is weight
the force that gravity exerts on a mass
what is the unit of weight
N (vector quantity)
what are the 2 types of balance
static
dynamic
what are 4 biomechanical factors that affect the ability for an athlete to remain in nuetral equilibrium
height of centre of mass
position of line of gravity
area of support base
mass of performer
what is centre of mass
point of balance within a body
what happens to centre of mass during exercise
centre of mass is constantly moving and changing position
what decreases centre of mass
height
what is line of gravity
imaginary line extending vertically downwards from centre of mass
when does stability increase in regards to line of gravity
if the line of gravity is kept central over base of support
what is base of support
number of contact points
when does stability increase in regards to base of support
larger base of support the more stable the position
when does stability change in regards to mass of performer
doesnt change during performance only relevant when comparing athletes
