The 30-yard line of the team kicking the ball off.
The kickoff is from the kicking team's 30 yard line making the kickoff travel 70 yards to reach the end zone.
The ball is spotted at the 2 yard line in the NFL and 3 yard line in College.
In football, the kick off positions used in a game are the 35-yard line for college football and the 30-yard line for professional football. The team kicking off can choose to kick the ball from the ground or use a kicking tee.
1955 through 1887
"40 yd line." Wrong - it is the 30 yard line now. HS still uses the 40 but college went to the 30 in 2007.
As long as the ball was kicked from the kicking team's own 30, then yes. The rule is NOT that a kickoff out of bounds is placed at the 40-yard line. The rule is that the ball is placed 30 yards from the spot of the kick. So if the kicking team had been given a 10-yard penalty on the PAT play, and ended up kicking from the 20 instead of the 30, and the ball goes out of bounds, the ball would then be placed at the 50 -- 30 yards away.
College football kicks off at the 35-yard line.
The 20 yard line
Except in desperate situations, a team will generally attempt a field goal only when keeping a drive alive is unlikely, and their kicker has a significant chance of success, as a missed field goal results in a turnover at the spot of the kick in the NFL; in the NCAA it's at the spot of the snap.
In the NFL, a player can be penalized for taking off their helmet during a game. The penalty typically results in a 15-yard unsportsmanlike conduct penalty.
Offside is when the defensive line men steps off the line of scrimage and makes contact with the offensive line man
The kicker. At there on 30 yard line