Is circular wheel rolling the most efficient way to move on land? why?
The distance between the center of gravity and the support point in the process of rotation is a constant value - the radius. (In theory, the real life of the wheel can not be absolutely round, the road can not be absolutely flat)
of course not. The wheels are only the most efficient on hard ground
What is the concept of "ground"? The ground and the ground are very different. 200 km per hour racing wheels suddenly hit the stone or a slowdown with what the results can imagine it? But the cheetah antelope rabbit can suddenly jump over. The wheels were invented by nature, and there was no asphalt road.
