In 1983 a 30 second shot clock was used in ACC league play. Joe Cowan
Yes. If the team kicking the ball does not kickoff before the play clock has expired.
35 (when I got the 2 answers that didn't agree - this one saying 35 and another saying 40 seconds, I went to the NFL site, and found the answer easily. It is 40 seconds.) Once the whistle blows to end a play, 40 seconds are place on the play clock and the play clock begins to wind down.
The coach to quarterback communication shuts off with 15 seconds left on the 40 second play clock.
1998
The NFL Play Clock is 35 seconds. The NBA Shot Clock is 24 seconds.
The clock is maintained by a certified NFL official. He or she takes cues to start and stop the clock from the referee.
In 1983 a 30 second shot clock was used in ACC league play. Joe Cowan
Yes. If the team kicking the ball does not kickoff before the play clock has expired.
35 (when I got the 2 answers that didn't agree - this one saying 35 and another saying 40 seconds, I went to the NFL site, and found the answer easily. It is 40 seconds.) Once the whistle blows to end a play, 40 seconds are place on the play clock and the play clock begins to wind down.
If the clock hasn't stopped for a time out, etc there is 40 seconds between the end of the last play and beginning of the next.
The coach to quarterback communication shuts off with 15 seconds left on the 40 second play clock.
1998
The NFL adopted the use of a 30 second play clock in 1976. This rule was later amended, and in 1988 the 30 second clock was increased to 45 seconds.
Clock Play happened in 1994.
2005
The shot clock was introduced to the NBA for two main reasons. It was invented to prevent either team from stalling and to make the game faster.