If you have 2 snowballs one which one will melt faster? @snoop

Given the condition that both will slide over snow, the snowball going upward will melt faster. The snowball going downward will have the chance to accumulate and snow as it slides downward, while the one going upward loses snow instead of getting snow as it rolls ups due to resistance to its surface which breaks up or skids the outer snow layer in contact with the surface.