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Anonymous users2024-02-07To be honest, in fact, adults don't even kick eight taels.
Official data. Sphere circumferential test: FIFA approved passing criteria:
。jabulani": - cm) Durability Round Sphere Test:
FIFA approved eligibility criteria: the maximum difference does not exceed. “jabulani”：
The maximum difference does not exceed the Absorbency Test: FIFA approved passing criteria: no more than 10% increase in the weight of the sphere.
jabulani": sphere weight 0 increase weight test: FIFA approved passing criteria:
The soccer ball weighs between 420 445 grams. "Jabulani": weight 440 g (+ - 2 g) Sphere shape and size retention ability test:
FIFA approved eligibility criteria: 2,000 hits at 50 km/h "jabulani": 3,500 hits at 50 km/h **Performance test:
FIFA approved eligibility criteria: not more than 10 cm. Ball pressure test:
FIFA approved eligibility criteria: ball pressure drop of no more than 20%. “jabulani”：
The ball pressure drop is no more than 10%.
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Anonymous users2024-02-06Adults play. Students can play, and children will be in trouble. Unhappy.
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Anonymous users2024-02-05In a normal game, the ordinary ball is the big ball.
As long as it is not a toy ball that children play with, it can be kicked.
Some professions have to train with small balls, bumper balls that are the size of a bowl, and develop a sense of foot.
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Anonymous users2024-02-04No. 3: for children to train and learn balls; No. 4: Kicks 5 or 7 players.
And No. 5: regular 11-player match ball, the circumference of the ball shall not be more than 71 cm or less than 68 cm. The weight of the ball, which must not be more than 453 grams or less than 396 grams at the start of the game.
After inflation, the pressure should be equal to 0 6-1 1 atmospheres (at sea level), i.e. equal to 600-1100 grams'. According to this calculation, the radius of the football should be between centimeters.
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Anonymous users2024-02-03FIFA approved eligibility criteria: The weight of the football is between 420 445 grams.
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Anonymous users2024-02-0212 black regular pentagons.
20 regular hexagons.
At the start of the race, it must not exceed 450 grams (pounds or 16 ounces) and must not be less than 410 grams (pounds or 14 ounces).
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Anonymous users2024-02-01420-450 grams. I'm going to kick it off again. Hahaha.
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Anonymous users2024-01-31The ball used in a football match must weigh no less than 396 grams at the start of the game.
Official data. Sphere circumferential test: FIFA approved passing criteria:
jabulani": - cm) Durability Round Sphere Test: FIFA Approved Qualification Criteria:
The maximum difference does not exceed. "jabulani": the maximum difference does not exceed the water absorption test:
FIFA approved eligibility criteria: increase in the weight of the ball by no more than 10%. “jabulani”：
Ball weight 0 increase Weight test: FIFA approved qualifying criteria: The weight of the ball is between 420 445 grams.
Jabulani': Weight 440 g (+ - 2 g) Sphere shape and size retention ability test: FIFA approved passing criteria:
2,000 hits at 50 km/h "Jabulani": 3,500 hits at 50 km/h **Performance test: FIFA approved passing criteria:
No more than 10 cm. Ball pressure test: FIFA approved passing criteria:
The ball pressure drops by no more than 20%. "Jabulani": the ball pressure drops by no more than 10%.
Attached: Football Standards:
The circumference of the sphere shall not exceed 70 cm (28 inches) and shall not be less than 68 cm (27 inches). The weight of the ball, at the start of the game, must not exceed 450 grams (16 ounces) and must not be less than 410 grams (14 ounces). The air pressure of the ball, at sea level, is to atmospheric pressure (600 grams to 1100 grams per square centimeter to pounds per square inch).
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Anonymous users2024-01-30The weight of the ball should be between 396 grams and 453 grams at the beginning of the game.
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Anonymous users2024-01-29The FIFA limit is not more than 450 grams (16 pounds) and not less than 410 grams (14 pounds) at the start of the match.
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Anonymous users2024-01-28The two longer boundary lines are called the sidelines, and the two shorter lines are called the goal lines. d
Turn on b x h 6 6 6 0
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