yes
Correct You must have both feet behind the line Correct You must have both feet behind the line
no they don't have to on the floor
No your feet can be on the ground.
19 feet from the baseline 15 feet from the backboard.
Yes. Both feet must be touching or entirely outside the line. A throw-in is incorrectly performed if one (or both) feet entirely enter the field of play at the moment of release. Note that there are other requirements for a correctly performed throw-in, but this is the only requirement for the feet.
In a throw in both feet need to stay on the ground. You may get a running start and drag one foot behind you, but both feet need to stay on the ground. If a foot is lifted the throw in will go to the other team.
The back of the free throw line is 15 feet from a point on the floor directly below the backboard surface, and is 13 feet 9 inches to the center of the goal as measured horizontally.
The free throw line is 15 feet from the basket in both NCAA and NBA.
Underneath the floor under the passenger's feet. You can get at it by lifting up the floor trim, and then taking off the access plate under there.
The back of the free throw line is 15 feet from the backboard and 13 feet 9 inches to the center of the goal.
A team is awarded with a throw-in when an opposing player is the last one to touch the ball before it leaves the field of play. And that is a soccer throw. you have to practice doing it because there are some rules for it.
A team is given a throw in when the ball exits the pitch on the wings after touching a member of the opposing team last. The throw must be over the head, with two hands on the ball, and two feet touching the floor as the ball is released. A goal cannot be scored directly from a throw in.