I am building a mousetrap car for physics and I need help.
So far I have my mousetrap car glued onto a light weight foam block.
I have some screw eyes to screw into the foam block for the axle to go through.

I need to go get some string and two axels.
But after that i don't know what to do.

PLEASE help me if you can.
I need a mousetrap car that will go a far distance.