The offensive team is allowed four downs, or plays, to advance the ball 10 yards. If they can advance the ball 10 yards in four plays, they get another four plays to move the ball 10 yards further downfield. This continues until the offense advances the ball into the end zone for a touchdown or they are unable to get the required 10 yards on four plays. In Canadian football, the same circumstances exist, except that a team gets only three downs to advance the ball 10 yards.
If you mean football or basketball, each half is 30 minutes.
A professional football team averaged 50,000 fans for each of its eight home games. What is the order of magnitude of the total attendance?
90 minutes, divided in two halves of 45 minutes each.
A football has a curved surface and polygons are flat. You can approximate a curved surface quite well if you use enough polygons but each polygon will still be flat and a football does have a curved (and rough) surface. Using a few thousand polygons you can create an approximation of a football with stitching seams and every detail but you will not have a curved surface you will have an approximation of a curved surface.
Spherical balls have no corners. The American football has 2 corners. A ball (of any shape) may be sewn together of polygons each of which has several corners (vertexes).
In American football, a team gets 4 downs to reach either the first down marker or the end zone. In Canadian football, a team gets 3 downs to reach either the first down marker or the end zone.
you have to block and tackle each other
The player who tackles the player with the ball will be credited. If 2 people tackle the player with the ball at the same time they will each be credited with 1/2 a tackle.
football or soccer soccer 22 ,11 on each team football not a clue
11 players representing each team are allowed on the football field. Each team is allowed 3 subsitutes.
12 on each team on the field at any one time
In Soccer each side is allowed two substitutes.
11 for each team.
A down is a cetain time of pessesion method in football each offense have 4 downs to gain more yards in but if the offense doesn't gain the required yards in a certain down. they may have to punt the ball.