kinesiology + biomechanics Flashcards
Newtons first law
object at rest or moves at constant momentum unless external force acts upon it
Newton 2nd law
f = m x a
newtons 3rd law
every action has an equal and opposite reaction
LINEAR MOTION
displacement (x)
change in position (x)
m
LINEAR MOTION
MOMENTUM (p)
mass X velocity
kg.m.s-1
LINEAR MOTION
VELOCITY (V)
change in position(x) / change in time(t)
m.s-1
LINEAR MOTION
ACCELERATION (A)
change in velocity(v) / change in time (t)
m.s^2
LINEAR MOTION
FORCE (F)
mass x acceleration
kg.m.s-2 = N
LINEAR MOTION
IMPULSE (IMP)
force X time = change in momentum (p)
kg.m.s-1 = N.s
LINEAR MOTION
KINETIC ENERGY (KE)
1/2 X mass X velocity^2
J
ANGULAR MOTION
Newtons 1st law
an object will stay in constant ANGULAR MOMENTUM unless external TORQUE acts upon it
ANGULAR MOTION
Newtons second law
TORQUE = total moment of inertia x angular acceleration
ANGULAR MOTION
Newtons 3rd law
if first objects exerts torque on second object
second object will react with equal torque and magntiude in opposite direction
ANGULAR MOMENTUM
moment of inertia
(mass x distance^2)
kg.m^2
ANGULAR MOMENTUM
angular displacement
change in angle
rad
ANGULAR MOMENTUM
angular velocity (w)
change in angle / change in time
rad.s^-1
ANGULAR MOMENTUM
angular acceleration
change in angular velocity / change in time
rad.s^-2