In some amazing situations, people have survived falling large distances when the surface they land on is soft enough. during a traverse of eiger's infamous nordvand, mountaineer carlos ragone's rock anchor gave way and he plummeted 515 feet to land in snow. amazingly, he suffered only a few bruises and a wrenched shoulder. assuming that his impact left a hole in the snow 3.6 ft deep, estimate his average acceleration as he slowed to a stop (that is while he was impacting the snow). pick a coordinate system where down is positive.