How can velocity be plotted in Vpython?

[e2m2a]

TL;DR

Can't find any documentation on how to plot/graph velocity as a function of time in vpython.

Can someone tell me how to plot/graph velocity in vpython? All the documentation I see just deals with plotting the position of the object, nothing on plotting the velocity.

 

[Mark44]

Summary:: Can't find any documentation on how to plot/graph velocity as a function of time in vpython.

Can someone tell me how to plot/graph velocity in vpython? All the documentation I see just deals with plotting the position of the object, nothing on plotting the velocity.

I don't understand your quandary. If you are able to plot position vs. time, why can't you also plot velocity vs. time? I'm not familiar with vpython, but it seems to be concerned mostly with 3D plots. If all you need is a 2D graph, you might consider using matplotlib with Python.

 

[robphy]

Given the position as a function of time, you need to somehow compute the velocity as a function of time.
If you have an algebraic expression, then you have to take a derivative with respect to t, then plot that resulting function.
If you have a position data in an array, then you have to effectively the compute numerical derivatives akin to $\Delta x/\Delta t$. (You may be used to other software that does that "automatically"... but that's because that software is doing that behind the scenes. Here in VPython, you have to do it yourself [or find a routine that does it].

 

[Mark44]

Given the position as a function of time, you need to somehow compute the velocity as a function of time.

My assumption was that the velocities at the various times were known.