Aboy throws a snowball straight up in the air with an initial speed of 4.50 ft/s from a position 4.00 ft above the ground. the snowball falls straight back down in to a 6 inches of snow. the snowball feels a deceleration of 100 m/s2 upon impact with the snow bank before coming to rest. (a) when does the snowball hit the top of the snow bank? (b) how far from the ground does the snowball come a rest?