[Trashed20]

that would only test from 10 feet up. This would be a stack of 7 high, each with a different velocity, trajectory, and rotation. The whole thing comes down to where the force is applied and how hard it is. It also includes friction cause by the interlocking bin design. Remember: you are pushing on the short side of the box! Many people are forgetting this, my team included. this causes a greater footprint for he box i nthe dirrection you are pushing, plus a greater distance from the center of gravity, which means you need more torque applied on the box (either more distance from the point of rotation, or more force applied). you would also have to account for the angle of the force, and how that would create rotational torque on the boxes which would cause them to go a wierd angles, and most likely hit other boxes, and then, the angle, speed, and surface at which it lands, and then bounces, and then comes to rest.

This is not a simple problem....