Linear Kinematics

Kinematics

the form, pattern or sequencing of movement with respect to time

-forces causing the motion are not considered

Linear motion/translation

all parts of an object or system move the same distance in the same direction at the same time

Linear Kinematics

the kinematics of particles, objects, or systems undergoing linear motion

Position

location of a point, with respect to the origin, within a spatial reference frame

-position is a vector (magnitude and direction)

Relative Position

Position of a second point with respect to a first point

-use them to locate structures inside the body from external landmarks

Linear Displacement

change from a point’s initial position to its final position

-its a vector (magnitude and direction)

-has units of length (m)

Distance

the length of the path traveled between a point’s initial and final position

-is a scalar (magnitude only)

-units of length

Movement efficiency

magnitude of displacement/distance

-movement with larger ration generally more efficient

Linear Velocity

rate of change of potion

Relative Velocity

velocity of a second point from the point of view of a first point