Algodoo

Some of my events I do not have a idea of what to do. Please note that I do not know how to make gravity,transporters,or make BMX cars so if you want to let me know. Say in the comments.So do not request
Magenta Palace,BMX Racing,Dodgeball(using Magenta ,Sled racing,Luck of the fall,Plinko,Stay on the car(using the BMX Magenta) And Tournament. I might do Musical Magentas just tell me how to make the magenta teleporters. But for the following events which are number 11,12 and 14 please let me know what event I should do.