100 meters is just over 109 yards. 1 meter is 1.094 yards.
100m race
they mean a closed yard
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.
The 20 yard line
40 yard line
The 50 yard line.
About 30 yards.
The ball is teed-up at the 40-yard line of the kicking team.
30
From his own 15 yard line to midfield (the 50 yard line) is 50 - 15, or 35 yards. From midfield to the opposing team's 45 yard line is 50 - 45, or another 5 yards. He has advanced the ball 40 yards for scoring purposes. However, if he zig-zagged, or ran diagonally across the field to do so, he would have run much further.
The kickoff is from the kicking team's 30 yard line making the kickoff travel 70 yards to reach the end zone.