Date: Thu, 26 Aug 2010 12:17:23

Author: chuck britton

Subject: Re: Sonic Ranger


This velocity graph of a falling ball will clearly show the parabolic
fall and rebound AND it shows the CONTACT time interval ! ! !
Surprisingly linear velocity graph while stopping and while throwing
itself back off of the floor.

Ya GOTTA try this to believe it!!!!

We used this to introduce the concept of Force, being defined
as the change in momentum.

Force = mg for the parabola is old hat - no big deal.

But for the momentum change of the BOUNCE - the interaction of two
objects is very real

At 9:53 AM -0600 8/26/10, Jerry DiMarco wrote:

> motion detector mounted high and aimed down to graph the motion of
>a freefalling basketball.

From Thu Aug 26 12:36:56 2010