Yes, the moment the ball breaks the plane of the end zone while in possession of an offensive player, a touchdown is called and the play ends.
It depends on whether or not he has the ball in his hands when he hits the ground of the endzone. If it is not in his possession, then it is a fumble and can be recovered by a defender. If it is in his hands and he touches the endzone, then it is a touchdown. If he was in possession of the ball when the ball crossed the goal line, it's a touchdown. As soon as the ball breaks the plane of the goal line, the ball is dead and the play is over. Anything that happens after that is irrelevant.
The point where a line crosses the x-axis is called the x-intercept.
Just hit the ball over the field its easy try it..... If the ball crosses the boundary rolling over the ground that means choka. And If it crosses the boundary directly it means chhakka... enjoy........
When one or more players stop the ball before or just after it crosses over the net.
No, once the ball crosses the line of scrimmage, no passing plays can be made.
Its commonly called the "boundary rope" (even if the actual material is not made of rope!)
fair
The defending team gets the ball and the goalie gets to kick off.
a coplanar
No. Only the point of the ball has to cross into the endzone to be concidered a touchdown, assuming the player has possesion of the ball. If the player catches the ball in the end zone, then yes, he has to get both feet down for the score to count. It's no different from the requirement to get both feet down for a completion on any other part of the field. In college and Canadian football, however, a player is only required to have one foot down for completions and touchdowns.
If the ball crosses wholely over the goal line (but not inside the goal) and was last touched by the attacking team, the defensive team is awarded a goal kick.
You can as long as the ball is on the plane of the net and you are not over (on there side of the net)