Building a roller coaster - Energy immersion

For immersion today the group and I tried to make a roller coaster (click here)But it had to be fun and safe.
I thought it was going to be easy but it was hard because everything I tried it said it wasn't safe and wasn't fun.After trying so many times to try and make my roller coaster safe and fun it didn't work.We are also learning about force and what it does to our bodys.To find out what it does we are going to Silverdale adventure park(click here). I'm very excited to be going out to the adventure park and going on the down hill luge and spaceship simulator.