Hello everyone. Now I throw out a sphere to a cube and I hope the sphere can turn and move to the cube's direction. Like this image:

and like the bucket in "Donkey Kong Country Returns"(1:13~1:19) http://www.youtube.com/watch?v=yVq7XNV7K0w&feature=mfu_in_order&list=UL
Have any way can make this? think you.