Yes, if it is his team's ball.
Yes, a coach may call another time-out before play resumes. This is often done when the opposing team is taking game-deciding foul shots with very little time remaining, so as to add pressure to the shooter. To work most effectively, wait until the players have almost completely lined up for the foul shot(s) to call the second time-out.
problem
Someone who teaches athletics.
The answer is in the writing just before the timer starts, DO NOTHING
A coach may yell out from the dugout but, it is up to which ever player has the ball when the play is over. All he has to do is touch the contested base with the ball in his hand. The umpire will either rule safe or out. It has to happen before another pitch is thrown.
There is no set "signals" used in the pros. If everyone used the same signals, the other team could/would use those signals to set up a better play. On offense, the pros utilize a one way communications system with the QB to call in the play. That system is disabled before the play starts. On defense, the coach uses hand signals to call in the play. Most are unique to the coach. If you wanted to discover what they mean, go to a pro game and record (camcorder) the coach calling in the plays then record the play. 1+1=2, and you'll be able to call the defensive scheme before the play. Would make "armchair QB" at the bar an easy win!
Any player on the field of play or the head coach of the team may call a timeout.
It's a corridor connection (or gangway connection) - a flexible connector fitted to the end of a railway coach to enable passage from one coach to another without falling out of the train.
to lead his team. he starts the play, then if his coach told him to do a running play, he hands it to the RB or HB. if the coach gives him a passing play, he throws the ball to one of the WRs and sometimes the TE and RB/FB. at the line of scrimmage, he can call an audible to change the play if the coach's play was going to be demolished by the defense
you throw pikmin on its face and call them back before it starts rolling
coach
coach