Jump to content

Driving 225 Mph With 60cs

Recommended Posts

I've had max speeds posted of 194 miles per hour on my CS. Surely what is going on is a function of the definition of velocity: distance/time. And since max velocity is an instantaneous velocity, the time interval is taken to be very small (as the CS cannot do limits - if you know some calculus). Now, the time interval is surely quite accurate as it is a function of only a clock. But the distance is determined by the GPSr. And there is a large variability in the distance - that's what the accuracy circle is all about. So, if the distance used in the computation of dist/time is off by a factor or 2 or 3. then the velocity is off the same. It is probably not hard for the distance to be off by a factor of much more when it is very small. That's why the max or (non-average) velocity is so far off. I don't even pay attention to these any more. Although, sometimes, they agree quite will my my car speedometer.

Edited by mgabel
Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...