No.
A player is down when his knee or back touches the ground. If the ball carrier loses the ball before this happens then it is called a fumble, and both teams try to recover the ball and whichever team does gains possession.
Yes. The only thing allowed to touch the ground without you being 'down' is your hands and feet. We even have interpretation questions on whether the wrist and ankles are part of the hand/feet to determine if a player is down.
If the ball touches the ground, the player is considered down. This is why the ground cannot cause a fumble.
If it was a pass and the WR was deemed not in control of the pass, it is known as a dropped or incomplete pass. The player has to have complete control, but the ball can touch the ground. This is determining the completion of the catch, though, not whether the player is down or not.
The ball is placed where the ball actually is (assuming the player still has "possession") when the player is down by contact or when the knee hits the ground.
No. They are down when any other part of the body hits the ground besides a players' hands or feet.
Punt
It is considered that a shin can not hit the ground without the knee hitting first. So yes the player is down.
It is 23 hits exactly.
Yes. The only parts of the body that can be down on the ground and the ball stay live are the hand and foot. If even a wrist of ankle is down, the ball is dead.
no , the offensive player has to have control or it is an incomplete pass. if offensive player hits the ground and ball comes out it is an incomplete pass.
1345
it hits the ground
If a player on defense catches a disc or hits it to the ground, then possession changes. The player may continue play going the opposite direction. If the disc hits the ground, any player may pick it up on his or her team to continue play. This is similar to an interception in American football.
When a ball is thrown forward but not caught in bounds or dropped and it hits the ground
Hangtime is how long the football is suspended in there air. The hand time is no more when the ball hits the ground or is caught.