A 100 g ball moving to the right at 4.0 m/s
collides head-on with a 200 g ball that is moving to the
left at 3.0 m/s.
If the collision is perfectly elastic, what are the speeds of
each ball after the collision?
(Vfx)1 and (Vfx)2
What is the direction of 100-g ball after the collision? upward,
downard, to the right, to the left?
What is the direction of 200-g ball after the collision? upward,
downward, to the right, to...