Causes of motion
Define kinetics
study of force and effects on objects in motion
rotational effect caused by force
linear = by force
angular = by torque
define kinematics
movement without referencing forces causing motion
define angular position
orientation of object in space
Fluid Force acts on objects in fluids, how many types are there and explain them
1. bouyant - upward force acts on ANY object in fluid
2. dynamic - acts on objects moving relative to fluid
what two forces act upon the lever system
motive and resistive
what are newtons 1st, 2nd, and 3rd law of motion
1. inertia
2. acceleration
3. reaction
in linear kinematics, on the x axis, a shift to the right is ....
positive
give the formula for angular speed
angular speed = angular distance/ time
Dynamic fluid forces have 2 components, name them
lift and drag force
name 2 examples of a 1st class lever
calf raises and elbow flexation
momentum = m *v, how can it be transferred and give an example
by contact
give the formula for velocity and explain each component
v = displacement / time
displacement = how far a point moved
velocity = how fast a point moved
in a specific direction
counter clockwise and clockwise are what respectively?
counter clockwise = positive
clockwise = negative
name the 4 affecting forces
1. differences in velocity
2. size and shape
3. density and viscosity
4. smoothness of surface
name the most common lever found in the body
3rd class
an increase in acceleration will cause velocity to shift in a ____________ direction
positive
angular distance is
how far an object rotated around the axis
angular and linear kinematics are related to each other how?
they are proportional
in gravitational forces mass is equal to weight , T or F
False
what 4 factors effect stability
1. size of base of support
2. how close line of gravity is
3. COM height
4. body mass
mass is proportional to _____, what does this mean?
inertia, increase in mass is an increase in inertia vice versa
0 m/s is when velocity is
not changing
angular displacement and velocity are what type of qualities?
vector qualities