Re: Interactive Physics graphing...

[Pete Lohstreter <petel@tenet.edu>]

Dwight,

Have IP draw three seperate graphs.  Don't put all of them in one box.  
That way you will get the scales.  IP scales all three graphs P-V-A 
independently and that could explain why the V vs. T graph looked wrong.
When the Velocity graph is drawn by itself, the zero (X-axis) should be 
half way along the V line.  Above the axis is an upward velocity and 
below the axis is a downward velocity.  In the absence of air resistance 
the velocity graph will have a slope of -9.81 m/s/s during the entire flight.

petel@tenet.edu

Pete Lohstreter                       "The first rule of intelligent
North Garland High School              tinkering is to save all the parts."
Physics Department                                           Aldo Leopold
2109 Buckingham
Garland, TX  75042



On Thu, 10 Oct 1996, Delissa Souder wrote:

> 	Greetings.  Today I was showing our school's math teacher the 
> Interactive Physics 2.5 that is on one of the school computers.  I was 
> helping him to understand as to what happens when you throw a ball straight 
> up.  I had the simulation keep track of the ball (position, velocity, and 
> acceleration) on the Y-axis.  My first question is when I switch to 
> graphing the ball and it's showing the position, velocity, acceleration, 
> the velocity line does not seem right.  I noticed this when the ball 
> reached its highest point and started coming back down, the velocity line 
> did not seem to reflect the change of the velocity.  Am I right about 
> what is being displayed for an object rising and falling?
> 	My next question is if it is possible to put a scale to the 
> graph.  The graph gives an idea as to what is happening, but it would be 
> nice to set it to a scale.
> 	Finally, is it possible to set up a table of each increment that 
> goes by.  For example is it possible to set up a data table (position, 
> velocity, acceleration, etc.) for each one second interval?
>
> 	Any information that someone has would be greatly appreciated.  I 
> know there has to be a manual somewhere, but unfortunately I'm new there 
> and the teacher responsible for putting it on is no longer around.
>
> Thanks,
> Dwight
> dsouder@ashland.edu