Seven on offense. No requirements for the defense
Seven (or more), just like any other scrimmage play.
You must have at least 7 men on the line for all scrimmage plays, including punts.
offsides. penialzed 5 yards
Defensive offsides is when a defensive player crosses the line of scrimmage, the yard line on which the ball is placed before the play begins, when the quarterback snaps the ball. The defensive player is allowed to accidentally jump across the line of scrimmage as long as he gets back to the defensive side of the ball before the ball is snapped. Offsides is a five yard penalty and a replay of down.
This happens when when a defensive player runs across the line of scrimmage before the ball is snapped. The offensive line can not flinch to make the defensive player run offsides.
The "invisible" line in football is the Line of Scrimmage.The Line of Scrimmage is the line that divided the offense from the defense, which is located at the tip of the football after it has been placed on the ground, also known as spotting the ball, by the referee. The line extends from sideline to sideline. Players cannot cross the line of scrimmage until the next play begins, and if they do a penalty can be called.If the offense crosses the line of Scrimmage before the ball is snapped, the following penalties can be called:Offsides: 5 yard penalty - This penalty is almost exclusively called on the defense because if an offensive player moves across the line of scrimmage, that player is typically charged with a False Start penalty.If the Defense crosses the line of Scrimmage before the ball is snapped, the following penalties can be called:Neutral Zone Infraction: 5 Yard penaltyEncroachment: 5 yard penaltyOffsides: 5 yard penalty
When the ball carrier is tackled and does not pass ball to teammate or the ball is out of bounds, the play is called a scrum, and the yard line where the last play was downed is called the line of scrimmage. -----In American football, draw a line from sideline to sideline where the ball is put into play on each down and that is the line of scrimmage.
Encroachment is when a defensive player makes contact with an offensive player at the line of scrimmage prior to the ball being snapped. Unabated to the quarterback is when a defensive player charges across the line and is on his way to the quarterback before the ball is snapped.
the line of scrimmage
A sack is when the quarterback is tacked behind the line of scrimmage before he is able to pass the ball.
Cannot move more than one man at a time. They must be set for one second before anyone else moves or the ball is snapped to be legal. They cannot at any point be on the line of scrimmage to move.
Seven, of which two are eligible receivers. All other offensive players must be at least one yard behind the line of scrimmage (the exception being the quarterback) for one second before the ball is snapped.
The defending team gets the ball after a missed field goal regardless of down Unless the refs call a do over and the team with the ball gets another chance to either run/pass for their extra points or make another kick attempt.
The ball must be placed on the line of scrimage before snapped. Assuming you are referring to a place kick or a punt, there is no rule dictating where the ball must be snapped to. Seven yards is standard as it should give the snapper, holder and kicker sufficient time to perform the kick.