A ball of mass 0.190 kg has a velocity of 1.47 i m/s; a ball of mass 0.305 kg has a velocity of -0.392 i m/s.They meet in a head-on elastic collision.
(a) Find their velocities after the collision.
m/s i (first ball)
m/s i (second ball)
(b) Find the velocity of their center of mass before and after the collision.
m/s i (before)
m/s i (after)