FWTW, here were my answers to Quiz 5:
1. B, 1/10, B-25, snap (25). Batting a ball in player possession is not a foul. When A11loses possession of the ball via B87's bat, the state of the ball is a fumble. So, when B87 recovers the ball (assumed to be "down"), the ball belongs to team B, and Team B is awarded a series. Game clock starts on the snap, and the play clock is at 25 and starts on the R's signal.
2. A, 3/G, B-10, snap (40, and running). When A88 steps OB (assumed to be voluntarily), he becomes ineligible. Pass interference rules do not apply to ineligible players, so B21's contact (assumed to be neither a UNR nor DH) is not a foul. Since A88 was airborne from OB, if he touched the ball, that simply makes the ball OB and dead, and is NOT an ITP foul. This just an incomplete pass. Game clock starts on the snap, and the play clock is at 40 and starts when the ball becomes dead on 2nd down.
3. A, 3/G, B-10, snap (40, and running). Since A88 was airborne from OB, when he touched the ball, that simply makes the ball OB and dead, and is NOT an ITP foul. This just an incomplete pass. Game clock starts on the snap, and the play clock is at 40 and starts when the ball becomes dead on 2nd down.
4. A, 3/10, A-25, ready (25). Snapping the ball before it is ready for play is not a legal snap, and the ball does not become alive. This is a five-yard penalty from the succeeding spot. The game clock is "status quo" (whatever is was doing when the foul occurred), and the play clock is at 25 and starts on the R's signal.
5. 4/5, A-25, ready. Since B66's injury occurred with less than 1 minute in the 4th period, Team A can elect to have 10 seconds subtracted from the game clock, setting the game clock to 0:39. Since the play clock would be set to 40 seconds, and the game cock starts on the R's signal, Team A does not have to snap the ball, effectively ending the game.
6. A, 2/5, A-30, snap (25). Defensive holding by B55, during a legal forward pass. The basic Spot is the Previous Spot, so the 10-yard penalty is enforced from the previous spot. Since the ball is first touched behind the NZ, the pass did not cross the NZ, so the down is repeated (no automatic first down). Game clock starts on the snap, and the play clock is at 25 and starts on the R's signal.
7. A, 1/10, A-40, snap (25). The block of the kick is immaterial. When B41 muffs the ball at the 50, the ball has officially crossed the NZ, ending Team A's series, and Team A becomes eligible to touch the ball. So, A21's recovery of the ball is legal, and A gets a new series. Since this was a legal kick down, the game clock starts on the snap, and the play clock is set to 25, and starts on the R's signal.
8. A, 3/5, A-30, snap (25). Defensive holding by B54. The basic Spot is the Previous Spot, so the 10-yard penalty is enforced from the previous spot. Since A66 is not eligible, the down is repeated (no automatic first down). Game clock starts on the snap, and the play clock is at 25 and starts on the R's signal.
Somebody else can address the replay questions.