Algodoo

this is really good for a first race! its also really fun to play.
here are some tips to make it look a bit cleaner:
For the marbles, get rid of the circle cakes by going to appearance and clicking the box, and right click on the tracers, go to selected, and choose "move selected to bacK", And make them a bit bigger, and to make the circular bowls, use the circle tool to make a big circle, than clone it and make a slightly smaller circle, put the circle inside the other one, then right click, go to geometry actions, and click subtract, and then delete the smaller circle

wait its actually cut under combine shapes-