When is see a dog running on sand, it doesn't use part of the motion energy to direction sand in a counter gravity trajectory. There is the energy efficiency part to be polished
Why does it kick so much sand into the air? Does it not lift its feet high enough, or do the feet sink in too deeply? 기계 번역: 왜 그렇게 많은 모래를 공중으로 걷어차는 걸까요? 발을 충분히 높이 들어 올리지 못하거나 발이 너무 깊이 들어가지 않습니까?
