Two rules questions inspired by NFHS test

[teebob21]

1) A batted ground ball comes to rest before passing either first or third base. The bottom of the ball is not physically touching the foul line, but a portion of the ball is above the foul line when the ball comes to rest.

Fair or foul? (2-20 Art. 1)

2) The outfield fence has yellow safety tubing along the top. A batted fly ball hits this tubing and (a) bounces up in the air, and falls past the fence untouched; (b) bounces up in the air, is misplayed by F8 a la Canseco, and falls past the fence before touching the ground; (c) obviously grazes this tubing and then clears the fence without a major change in direction.

Home run or two base award? (2-28 "In Flight"; 8-4-3(f))

The case book has 2(a) listed as a home run. (8-4-3 Situation S) If this is true, then the ball is still a fly ball. This contradicts another case interpretation in the same scenario where (b) above is a two base award, as well as the definition of "in flight" where a ball is defined as in flight even if it is touched by a fielder. If (a) is a home run and fly ball, by rule why would it not be an out if the ball is caught by F8?