Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Velocity problem with the step size

Return to the Tracker forum
Login to post to this thread

The size of the step change the value for velocity? - Dec 3, 2013 at 9:13AM
Ismael Lozano
2 Posts

The tracker software is great, in our lab resulted very useful. I have a question regarding a problem with my data. I measure the speed of escape of fish larvae. I am following the fish with a mass point step by step. I noted that if i register the speed (v) with a step size of 1 the maximum speed of the fish is 25.5. But if a register the same sequence with a step size of 36 the maximum speed is 2.5. I use the same calibration stick. My question is: is the speed changing with the step size? am i doing something wrong? It supposed that the speed is the same. Thank you for your time. Congratulations for the software
P.d.: sorry for the english, i am a spanish speaker


Current Replies - View all
Re: The size of the step ...   (Douglas Brown - Dec 03 2013 at 11:26AM)
Thank you very much!   (Ismael Lozano - Dec 03 2013 at 12:18PM)
The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics