Yes, as long as the player is not considered tackled a defensive player may strip the ball from the ball carrier.
You tackle the ball, not a player.
Receives the ball from the center, and either runs with it or passes it to another player. And they get tackled. A lot.
No, a timeout can not be called until the player with the ball is down or out of bounds.
It is when you have the ball and you get tackled and you feed the ball out to your halfback
The ball is placed at the position of the ball when the player is downed. If that position is not between the hash marks it will be moved to the nearest hash.
In the NFL the player is marked down once he has complete control of the ball (no longer bobbling the ball) and has been touched down by contact. If the player bobbles the ball, but continues to run and is not down by contact the play continues. However if the player catches the ball but is still bobbling it while he is being pushed backward by a defender, the player will be marked down once he has control at that spot.
A safety is whan a Player with the ball is tackled in their own endzone. It worth 2 points and defense receives the ball on a free kick.
It means the offensive player holding the ball was tackled behind the line of scrimmage.