HELP! I need to design a roller coaster for Physics (Yr 12) and I need a program that will set it out for me.?

if you are in america then get nolimits its a bit complicated but good if you are somewhere else get rolercoaster tycoon 3 or scream machines just to say there are a lto out there its just theres big ones like scream machines and rollercoaster tycoon and theres smaller ones so look out for them