For 4/25/14 mini lab.  Here is the worksheet:  Gravity Intro Worksheet

Penny Drop Video
The above video is out of order, please go to the video below in order to see what should happen when one thing falls horizontally vs. something that falls vertically.  You also may want to watch the Myth Busters gunshot part 5 video that comes up after the video below.

Simultaneous Free Fall Video

Worldly Weights link