The ball is spotted at the 2 yard line in the NFL and 3 yard line in College.
From the 15 yard line to the 50 yard line (the center) is 35 yards. It's another 10 yards to the other team's 40 yard line. So the total distance from one team's 15 yard line to the other team's 40 yard line is 45 yards.
40 yard line
The 20 yard line
The 50 yard line.
About 30 yards.
The ball is teed-up at the 40-yard line of the kicking team.
It is not on a yard line, it is on the back line of the endzone, which is 10 yards deep.
The kickoff is from the kicking team's 30 yard line making the kickoff travel 70 yards to reach the end zone.
30
She has had a knitting yard line and not a clothing line
The first end zone line, ususally referred to as the goal line.