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暑期,小张和弟弟随父母到海南旅游、租借了潜水服到浅海畅游.小张的泳术逊于弟弟,却挑战弟弟的徒手潜水能力,看谁先升出水面,输的给对手买一个芒果,爸爸当临时裁判.随着一声令下,身高1.7米的小张与身高只有1.4米的弟弟一起潜入水中,弟弟在水中停留了约1分钟,而过了15秒后才看到小张升到水面,小张胜了,爸爸安慰弟弟说:“你只输了身高,我想明年比赛你会把水中停留的时间差距缩小的”. 身高如何帮助小张胜出的呢?秘诀基于以下的正比关系: 1.肺活量V(即带氧体积)与身高h的立方成
During the summer, Xiao Zhang and his younger brother went to Hainan for sightseeing with their parents and rented a diving suit to swim in the shallow sea. Xiao Zhang’s swimming technique was inferior to his younger brother, but he challenged his younger brother’s ability to dive to see who would first rise above the water and lose to the opponent to buy one. Mango, Dad, when the provisional referee. With a single order, Xiao Zhang, who is 1.7 meters tall, dive into the water with his brother, who is only 1.4 meters tall. The younger brother stayed in the water for about 1 minute, and after 15 seconds he saw Xiao Zhang. Ascended to the surface, Xiao Zhang won, and Dad comforted his brother and said: “You just lost your height. I think next year you will narrow the gap between the time spent in the water.” How height helps Xiao Zhang win? The secret is based on the following The proportional relationship: 1. The cubic capacity of the lung capacity V (ie, oxygen-bearing volume) and height h