phy53 dr. brown 30 sep 2010
collisions in 2, 3 - D often leads to more unknowns than equations
-- Elastic collisions
momentum AND K conserved
-- totally Inellastic
momentum conserved -- but NOT K
same for partially inellastic
example ellastic collision
solve in center of mass frame -- "easiest" way
v_lab = v_cm + u
review inellastic collision
K in and out of the CoM frame
K-lab = K of cm + K in cm
Rigid objects
disk translation and rotation