Mechanics > Linear Momentum > Collisions in One Dimension
 DCS# 1N30.60
DOUBLE BALL DROP
basketball and ping pong ball
APPARATUS
basketball 202-14-F
tennis ball
 202-14-E5
o-ring
 202-14-E5
DESCRIPTION
Set tennis ball on o-ring on top of basketball and release both so they remain together as they fall.  When they reach the floor, the tennis ball will bounce off the rebounding basketball to much greater than the original release height.