Algodoo

why are you only using scene.my.variables?????
You do know that scene.my.variables are worse than normal variables in objects?
Why do you use a variable updat and a variable timem if they are identical? You can just use a variable updat and use it instead of timem

Look at this page to learn a bit more about thyme, or just ask the people who are good at it. This way you learn the best.
http://algodoo.wikia.com/wiki/Thyme

HOW does this device detect speed? You give no instructions how to use it. Are we supposed to read your mind? Sorry, but I cannot do that, and I suspect that most other people cannot do that either!

Please give instructions.

And FRA32 is correct about your poor programming practices. Learning to program is just like learning a new spoken language. At first it will seem awkward and you will make a lot of mistakes. But over time as you learn proper technique and learn how to write efficient code, you will get better at it.