Even after a penalty, the clock stops only when the play is over.
The clock stops for several reasons. An official can stop it for an official reason like to take a measurement. Each team can take time outs, this stops the clock. An incomplete pass stops the clock.The clock will stop if there is an injury on the field.
No. Not in the NFL, only in college football
There is an official timekeeper at each NFL game and he coordinates with the referees.
Yes, the clock stops when a player goes out of bounds, not only in NFL playoff games but in any football game at any level. The only exception is if the player's forward momentum is stopped before reaching the sideline.
It is because it is ruled an incomplete pass and therefore time stops.
No. That's only a college-football rule.
No, that rule has been in college football for a long time but has never been adopted by the NFL.
None. The clock stops for injuries. Unlike soccer.
NFL - 60 minutes, 4 15-minute quarters.
Penalties(If a flag is thrown), an incomplete pass, the ball carrier stepping out of bounds, change of possession, the quarterback spiking the ball, and timeouts stop the clock.