Algodoo

JP - I have a couple of suggestions which you may want to consider:

1. The blob in the moving rocket should be at a constant acceleration (same as gravity). Therefore, the velocity should be continuously increasing over time (similar to a falling object). Remember, the formula for the acceleration of gravity here on Earth is approximately: v = 9.8m/s^2 (don't forget the ^2)
2. I struggled somewhat with my own version of this scene, and that's why I have not posted it. It's difficult to show a person or object at rest on the Earth while at the same time show a person or object accelerating in a rocket! In order to show the person in the accelerating rocket, the "Follow" function must be turned on (I used the "rocket" structure to follow, and I turned on the y vs x plot which shows the increasing velocity over time). I did that in your scene, but after a few seconds of travel, the rocket started to spin, and then the velocity took on a sinusoidal pattern! So, there are some issues there to work on.
3. Remember that most of the people who use and love Algodoo are young kids. So, we try to be somewhat simple in our scientific explanations of the scene while still trying to remain technically accurate. Sometimes that's hard to do!

good scene, one other example you could use is an elevator, maybe more people are familiar with that.

Xray- I would love to add all of that, but there is a problem, everytime I try to open this scene, Algodoo will simply freeze. I mean, if i could improve on it I definetly would, but it crashes... Is there any way I can fix that?

ezpz(fib)5- Probably an elevator that accelerates upwards

Yeah, it freezes with me too. I think the problem is those thousands of "stars" that you created. Algodoo has trouble handling so many of them. It would be better to delete most of them and just leave a few. Then Algodoo will load and save much faster. Scenes that have a lot of water in them are very slow loading too.

Just a side note. This kind of scene cannot be stamped out in one day. In order to do it right, it would probably end up taking me a week or two of my spare time of designing, testing, and debugging the scene. I already spent a few hours on my version of it, and it's still far from "finished". I just lost interest in it, so that's why I suggested it to you. If it turns out to be too difficult or it takes too much of your time, I'll try working on it again. Let me know. Thanks!

yes, an elevator, doesn't it feel like the gravity is larger, and the opposite when going down?

Im gonna remake this scene

OK, great! I'm looking forward to seeing how it turns out.