Box rolling down hill

Hello, 

I have recently learned to use grasshopper and I am trying to use kangaroo for my studio project. I would like to simulate a motion of a box rolling down a muddy hill and gradually settle into the topography. I am not very familiar with kangaroo at the moment, so I was searching video tutorials but couldn't find anything related to my topic. I wonder if someone can point me a direction that I can work with?

Thank you!!

p.s-attached is my sketch for animation

best,

Minghui